{
   "name": "SPASE Base Model",
   "version": "2.7.1",
   "released": "2025-11-26",
   "description": "SPASE Base Model",
   "namespace": "spase",
   "schemaurl": "http://www.spase-group.org/data/schema",
   "extend": "",
   "history": [
      {
         "id": "335",
         "version": "2.7.1",
         "updated": "2025-11-26",
         "changedBy": "Z. Boquet",
         "description": "Modified existing Rights object: renaming FullName to RightsName, adding Note, enclosing these properties within a Rights container to be used within both the RightsList and new MetadataRightsList. Added new moons to Jupiter and Saturn. Adding tombstone capability via the new Status element and additional AssociationTypes. Modifying the PriorID definition to more closely align with its current use.",
         "note": ""
      },
      {
         "id": "334",
         "version": "2.7.0",
         "updated": "2025-02-03",
         "changedBy": "C. Dolan",
         "description": "Built out the Rights type; added SchemeURI, RightsIdentifier, RightsIdentifierScheme, RightsURI, FullName. Added FixedValue column to ontology.tab to hold schema-fixed values. Updated makexsd.js to format fixed values.",
         "note": ""
      },
      {
         "id": "333",
         "version": "2.7.0",
         "updated": "2025-02-03",
         "changedBy": "L.F.Bargatze",
         "description": "Fixed typos in the DataCite rights and rightList Metadata Conventions section of the SPASE 2.7.0 Base Model PDF. Added OperationsManager to the Role enumeration list.",
         "note": ""
      },
      {
         "id": "332",
         "version": "2.7.0",
         "updated": "2024-12-04",
         "changedBy": "L.F.Bargatze",
         "description": "Added DataCite equivalent container named rightsList to the AccessInformation container. The rightsList Container must include at least one text field elements called rights. Both rightsList and rights definitions have been added to the SPASE dictionary. Added new items to the Qualifier enumeration list: Amplitude, Magnitude, MassMixingRatio, and MixingRatio; definitions added to the SPASE Dictionary. Added NamingAuthority, a text field element, and ResourceType, an enumerated text field element, to all SPASE resource types (eighteen total). NamingAuthority and ResourceType have been inserted immediately following ResourceID and the both terms have been added to the dictionary. An enumeration list also called ResourceType has been added under list.tab. And, the ResourceType enumeration list items have been inserted into member.tab. Added the text field element re3data to the dictionary and to the Repository resource type container. Added the RORIdentifier text field under the Instrument, Observatory, Registry, and Repository resource type containers.",
         "note": ""
      },
      {
         "id": "331",
         "version": "2.6.1",
         "updated": "2024-10-07",
         "changedBy": "L.F.Bargatze",
         "description": "Added Dictionary listings for the terms Region and YN with assigned Enumeration List names. Changed Enumeration List name from Product to ModelProduct. Changed ProcCoeffType Enumeration List name to ProcessCoeffType. Correct duplicate History listing 329 to 330. Sort SPASE model Dictionary, List, and Member tab files alphabetically. The Member tab file was sorted alphabetically within each individual Enmeration List member sequence.",
         "note": ""
      },
      {
         "id": "330",
         "version": "2.6.1",
         "updated": "2024-09-05",
         "changedBy": "L.F.Bargatze",
         "description": "Corrected the deletion error of PopulationChargeState in the Particle container. Added SPASE Dictionary definition for Muon added it to the ParticleType enumeration list.",
         "note": "Muon addition requested by S.F. Fung via e-mail 2024-08-09."
      },
      {
         "id": "329",
         "version": "2.6.1",
         "updated": "2024-06-24",
         "changedBy": "L.F.Bargatze",
         "description": "Updated SPASE Dictionary definitions for Acknowledgement, AssociationType, Author, Authors, DirectionAngle, Encoding, FlowSpeed, FlowVelocity, Format, MagneticCloud, PublicationDate, ReleaseDate, ResourceName, Style, and ThermalSpeed. Added SPASE Dictionary definitions for LocalGeographic, LocalGeomagnetic, and SensorCoordinates and added these terms to the CoordinateSystemName enumeration list. Added SPASE Dictionary definition for StonyhurstHeliographic and added this term to the CoordinateSystemName enumeration list per request of Masahito Nose-san. Added SPASE Dictionary definitions for AOGCM, GCM, and NonHydrostatic and added these terms to the ModelType enumeration list. Updated SPASE Dictionary definition for Electrohydrodynamics and revised the name of the term by deleting the last character, the terminal s, to maintain consistancy with other terms in ModelType enumeration list. Added SPASE Dictionary definition for InterplanetaryCoronalMassEjection and added this term to the PhenomenonType enumeration list. Corrected SPASE Ontology listing of the Cardinality for RepositoryID under AccessInformationOptional to replace the letter r with the number 1 (required). Updated the SPASE Ontology listing of the Cardinality for SpatialCoverage under DisplayData and Granule from + (1 or more) to * (0 or more). Updated the SPASE Ontology listing of the Cardinality for SpatialCoverage under Member and Parameter from 0 (optional) to * (0 or more). Updated the SPASE Ontology listing of the Cardinality for OperatingSpan under Observatory from + (1 or more) to * (0 or more). Updated the SPASE Ontology listing of the Cardinality for OperatingSpan under Instrument from 0 (optional) to * (0 or more). Updated the SPASE Ontology listing of the Cardinality for ModelType under Model from 1 (required) to + (1 or more). Added SPASE Dictionary definitions for SourceRegion and SourceRegionExtent and added these to text fields to the end of the Particle and the Wave containers each with * cardinality (0 or more). Added SPASE Dictionary definition for Lidar and added this term to the InstrumentType enumeration list.",
         "note": "Decided during the telecon on 2024-05-23."
      },
      {
         "id": "328",
         "version": "2.6.0",
         "updated": "2023-08-03",
         "changedBy": "C. Dolan",
         "description": "SPASE Version 2.6.0 Released.",
         "note": "Decided during the telecon on 2023-08-02."
      },
      {
         "id": "327",
         "version": "2.6.0",
         "updated": "2023-08-02",
         "changedBy": "L.F.Bargatze",
         "description": "Changed SimulationModel to Model, SimulationRun to ModelRun, and other terms by replacing \"Simulation\" with \"Model\" and \"Simulated\" with \"Modeled\", The dictionary.tab file definitions wre similarly updated to a generic \"model\" form, Added Empirical under the ModelType enumeration list.",
         "note": "Per C. Wiegand."
      },
      {
         "id": "326",
         "version": "2.6.0",
         "updated": "2023-07-16",
         "changedBy": "L.F.Bargatze",
         "description": "Added AccessInformationOptional to the schema and under SimulationModel as simulation model code is not always accessible.",
         "note": "Per C. Wiegand."
      },
      {
         "id": "326",
         "version": "2.6.0",
         "updated": "2023-07-09",
         "changedBy": "L.F.Bargatze",
         "description": "Added AccessFilenameTemplate and AccessDirectoryTemplate to AccessInformation.",
         "note": "Per B. Candey and J. Faden."
      },
      {
         "id": "325",
         "version": "2.6.0",
         "updated": "2023-06-15",
         "changedBy": "L.F.Bargatze",
         "description": "Added AccessInformtion to the Software SPASE resource type.",
         "note": "Per Shing F. Fung."
      },
      {
         "id": "324",
         "version": "2.6.0",
         "updated": "2023-06-15",
         "changedBy": "L.F.Bargatze",
         "description": "Added the Comet Enumeration List including three members.",
         "note": "Per Daniele Boucon via Shing F. Fung."
      },
      {
         "id": "323",
         "version": "2.6.0",
         "updated": "2023-06-15",
         "changedBy": "L.F.Bargatze",
         "description": "Updated the Description of Current under FieldQuantity and Added Current under ParticleQuantity; Added CurrentDensiity under both FieldQuantity and ParticleQuantity.",
         "note": "Per Shing F. Fung and Vincent Genot."
      },
      {
         "id": "322",
         "version": "2.6.0",
         "updated": "2023-06-15",
         "changedBy": "L.F.Bargatze",
         "description": "Merged the Simulation 1.0.0 SPASE Model Extensions with the SPASE 2.5.0 Base Model; Four simulation related SPASE resource types added: SimulationModel, SimulationRun, DisplayOutput, and NumericalOutput; Merged Base and Simulation definitions.",
         "note": "Concensus to add the Simulation Extensions to the SPASE Base Model."
      },
      {
         "id": "321",
         "version": "2.5.0",
         "updated": "2022-08-29",
         "changedBy": "T.King",
         "description": "SPASE version 2.5.0 Released.",
         "note": "Decided during the telecon on 2022-08-29."
      },
      {
         "id": "320",
         "version": "2.5.0",
         "updated": "2022-08-29",
         "changedBy": "T.King",
         "description": "Added AccessInformation to Collection.",
         "note": "Per Seiji and discussion during telecon on 2022-08-29."
      },
      {
         "id": "319",
         "version": "2.5.0",
         "updated": "2022-07-21",
         "changedBy": "T.King",
         "description": "Added Collection, Member, and MemberID to the dictionary; Added Collection resource to model.",
         "note": "Per L.F. Bargatze, D.A. Roberts and T. King emails, and discussion during telecon on 2022-04-28."
      },
      {
         "id": "318",
         "version": "2.4.2",
         "updated": "2022-07-21",
         "changedBy": "T.King",
         "description": "SPASE version 2.4.2 Released.",
         "note": "Decided during the telecon on 2022-07-21."
      },
      {
         "id": "317",
         "version": "2.4.2",
         "updated": "2022-07-07",
         "changedBy": "T.King",
         "description": "Revised the \"SpatialCoverage\" container.",
         "note": "Per L.F. Bargatze, and discussion during telecon on 2022-07-07."
      },
      {
         "id": "316",
         "version": "2.4.2",
         "updated": "2022-05-19",
         "changedBy": "T.King",
         "description": "Added Title and LandingPageURL to the dictionary; Added Title and LandingPageURL to PublicationInfo.",
         "note": "Decided during telecon on 2022-05-19."
      },
      {
         "id": "315",
         "version": "2.4.2",
         "updated": "2022-01-21",
         "changedBy": "T.King",
         "description": "Added \"SpatialCoverage\", \"NorthernmostLatitude\", \"SouthernmostLatitude\", \"EasternmostLongitude\", \"WesternmostLongitude\", \"CenterLatitude\", \"CenterLongitude\", \"MinimumAltitude\", \"MaximumAltitude\" to the dictionary; Created \"SpatialContainer\" container; Added \"SpatialCoverage\" to \"DisplayData\", \"Granule\" and \"NumericalData\"; Decided during the telecon on 2022-01-20, but moved from 2.4.1 to 2.5.0.",
         "note": "Decided during the telecon on 2022-01-20, but moved to from 2.4.1 to 2.5.0."
      },
      {
         "id": "314",
         "version": "2.4.1",
         "updated": "2022-05-19",
         "changedBy": "T.King",
         "description": "SPASE version 2.4.1 Released.",
         "note": "Decided during the telecon on 2022-05-19."
      },
      {
         "id": "313",
         "version": "2.4.1",
         "updated": "2022-05-05",
         "changedBy": "T.King",
         "description": "Updated definitions of MeasurementType, PublicationDate, PublicationInfo and PublishedBy.",
         "note": "Per S. Fung suggestions."
      },
      {
         "id": "312",
         "version": "2.4.1",
         "updated": "2022-04-28",
         "changedBy": "T.King",
         "description": "Added Remark and WebResource to the dictionary; Added Remark, WebResource, WebService to SupportQuantity enumeration.",
         "note": "Per L.F. Bargatze led discussion during telecon on 2022-04-28."
      },
      {
         "id": "311",
         "version": "2.4.1",
         "updated": "2022-04-20",
         "changedBy": "T.King",
         "description": "Added InstrumentScientist to the dictionary and to Role enumeration; Fix definition of Longitude.",
         "note": "Per S. Fung email."
      },
      {
         "id": "310",
         "version": "2.4.1",
         "updated": "2022-02-24",
         "changedBy": "T.King",
         "description": "Make Annotation.PhenomenomType zero or more occurrences (*); Make Observatory.Location one or more occurrences (+).",
         "note": "Decided during the SMWT telecon on 2022-02-24."
      },
      {
         "id": "309",
         "version": "2.4.1",
         "updated": "2021-10-14",
         "changedBy": "T.King",
         "description": "Added Git, TAP, EPNTAP to the dictionary and to Style enumeration; Added TFCat, RINEX2 and RINEX3 to the dictionary and Format enumeration; Added Author to the dictionary and to Role enumeration.",
         "note": "Decided during the IHDEA meeting 2021-10-01."
      },
      {
         "id": "308",
         "version": "2.4.0",
         "updated": "2021-06-10",
         "changedBy": "T.King",
         "description": "SPASE version 2.4.0 Released.",
         "note": "Decided during the telecon on 2021-06-10."
      },
      {
         "id": "307",
         "version": "2.4.0",
         "updated": "2021-04-29",
         "changedBy": "T.King",
         "description": "Added ValueAdded to the dictionary; Added ValueAdded to ProcessingLevel.",
         "note": "Suggested during subsequent telecons."
      },
      {
         "id": "306",
         "version": "2.4.0",
         "updated": "2021-04-29",
         "changedBy": "T.King",
         "description": "Changed Format in AccessInformation to have one or more occurrence.",
         "note": "Decided during telecon on 2021-04-29."
      },
      {
         "id": "305",
         "version": "2.4.0",
         "updated": "2021-04-29",
         "changedBy": "T.King",
         "description": "Added Policy and Convention to the dictionary and to DocumentType enumeration.",
         "note": "Decided during prior telecon."
      },
      {
         "id": "304",
         "version": "2.4.0",
         "updated": "2021-02-04",
         "changedBy": "T.King",
         "description": "Changed \"Version\" to \"SoftwareVersion\" under \"Software\"; Added elements to \"InputProperty\" and \"OutputProperty\".",
         "note": "Discussed in email exchanges."
      },
      {
         "id": "303",
         "version": "2.4.0",
         "updated": "2020-11-12",
         "changedBy": "T.King",
         "description": "Added Software resource and related elements to the information model.",
         "note": "Discussed during prior telecons."
      },
      {
         "id": "302",
         "version": "2.3.2",
         "updated": "2020-10-15",
         "changedBy": "T.King",
         "description": "SPASE version 2.3.2 Released.",
         "note": "Decided during the telecon on 2020-10-15."
      },
      {
         "id": "301",
         "version": "2.3.2",
         "updated": "2020-10-08",
         "changedBy": "T.King",
         "description": "Added InstrumentLead to the dictionary and to Role.",
         "note": "Decided during the telecon on 2020-10-08."
      },
      {
         "id": "300",
         "version": "2.3.2",
         "updated": "2020-09-30",
         "changedBy": "T.King",
         "description": "Added InstrumentGroupID and Experiment to the dictionary; Added InstrumentGroupID to Instrument and Experiment to InstrumentType.",
         "note": "Decided during the telecon on 2020-09-24."
      },
      {
         "id": "299",
         "version": "2.3.2",
         "updated": "2020-09-10",
         "changedBy": "T.King",
         "description": "Added \"Housekeeping\", \"Telemetry\", \"RotationMatrix\", \"EncodedParameter\", \"AutoSpectrum\", \"Coherence\", \"ImaginaryPart\", \"RealPart\", \"PowerSpectralDensity\", \"ChargeFlux\", \"DynamicPressure\", \"EnergyPerCharge\", \"ParticleRigidity\", \"MassPerCharge\", \"LShell\", \"MissionPrincipalInvestigator\", \"ProgramManager\", \"ProgramScientist\", \"VolumeEmissionRate\", \"SPICE\", \"MissionManager \"to the dictionary and to appropriate \"enumerations as suggested by L.F. Bargatze; Added \"PDS4\" and \"PDS3\" to \"the \"dictionary and to the \"Format\" enumeration as suggest by A. Masson.",
         "note": "Decided during the telecon on 2020-08-06."
      },
      {
         "id": "298",
         "version": "2.3.1",
         "updated": "2019-11-14",
         "changedBy": "T.King",
         "description": "SPASE version 2.3.1 Released.",
         "note": "Decided during the telecon on 2019-11-14."
      },
      {
         "id": "297",
         "version": "2.3.1",
         "updated": "2019-10-31",
         "changedBy": "T.King",
         "description": "Added CoPI, MidLatitudeRegion, SubAuroralRegion, ProjectEngineer, and ProjectManager to the dictionary; Added CoPI, ProjectEngineer, ProjectManager to Role enumeration; Added Plasmasphere, RingCurrent, and MidLatitudeRegion to Magnetosphere enumeration.; Added MidLatitudeRegion, and ProjectManager to NearSurface enumeration.; Fix typo with Role values with dashes.",
         "note": "Decided during telecon on 2019-10-31."
      },
      {
         "id": "296",
         "version": "2.3.1",
         "updated": "2019-09-27",
         "changedBy": "T.King",
         "description": "Added DirectionCosine, GeometricFactor, AdiabaticInvariant, MagneticMoment, BounceMotion, DriftMotion, DataQuality, Orientation, SpinPeriod, SpinPhase, SpinRate, LowerHybridFrequency and UpperHybridFrequency to the dictionary.; Create DirectionCosine enumeration with I,J,K as members; Create AdiabaticInvariant enumeration with MagneticMoment, BounceMotion and DriftMotion as members.; Added DirectionCosine to Qualifier list.; Added GeometricFactor, AdiabaticInvariant to ParticleQuantity; Added DataQuality, Orientation, SpinPeriod, SpinPhase and SpinRate to SupportQuantity.; Added LowerHybridFrequency and UpperHybridFrequency to WaveQuantity.",
         "note": "Suggested by L.F. Bargatze. Decided during telecon on 2019-09-20."
      },
      {
         "id": "295",
         "version": "2.3.1",
         "updated": "2019-06-13",
         "changedBy": "T.King",
         "description": "Added RevisionHistory, RevisionEvent to the dictionary and Added RevisionHistory to ResourceHeader; Added IonGauge to the dictionary and to InstrumentType.",
         "note": "Decided during telecon on 2019-06-13."
      },
      {
         "id": "294",
         "version": "2.3.1",
         "updated": "2019-06-13",
         "changedBy": "T.King",
         "description": "Added StartDate, StopDate and Note to Contact.",
         "note": "Decided (partially) during telecon on 2019-05-30."
      },
      {
         "id": "293",
         "version": "2.3.1",
         "updated": "2019-02-25",
         "changedBy": "T.King",
         "description": "Added Developer, HostContact and User to the dictionary and Role list.",
         "note": "Decided by email 2019-02-20."
      },
      {
         "id": "292",
         "version": "2.3.1",
         "updated": "2018-11-01",
         "changedBy": "T.King",
         "description": "Added Positron to the dictionary and ParticleType list.",
         "note": "Decided at telecon on 2018-11-01."
      },
      {
         "id": "291",
         "version": "2.3.1",
         "updated": "2018-06-18",
         "changedBy": "T.King",
         "description": "Added Eccentric Dipole (ECD) to the dictionary and CoordinateSystem list.",
         "note": "Decided by email on 2018-05-18."
      },
      {
         "id": "290",
         "version": "2.3.0",
         "updated": "2018-05-31",
         "changedBy": "T.King",
         "description": "SPASE version 2.3.0 Released.",
         "note": "Decided during the telecon on 2018-05-31."
      },
      {
         "id": "289",
         "version": "2.3.0",
         "updated": "2018-05-08",
         "changedBy": "T.King",
         "description": "Added File, HAPI, Listing, Search, Template, Overview, WebService to the dictionary and as values for Style enumeration.; Added Style to the dictionary and AccessURL.",
         "note": "Decided (partially) during the telecon on 2018-03-19."
      },
      {
         "id": "288",
         "version": "2.3.0",
         "updated": "2018-05-04",
         "changedBy": "T.King",
         "description": "Added PublicationInfo, PublicationDate, Authors, Funding, Agency, Project, Award, ORCIdentifier to the dictionary and to the model.",
         "note": "Decided (mostly) during the telecon on 2018-03-19."
      },
      {
         "id": "287",
         "version": "2.3.0",
         "updated": "2018-02-08",
         "changedBy": "T.King",
         "description": "Added DOI to the dictionary and to ResourceHeader.",
         "note": "Decided during the telecon on 2018-02-08."
      },
      {
         "id": "286",
         "version": "2.2.9",
         "updated": "2017-11-14",
         "changedBy": "T.King",
         "description": "SPASE version 2.2.9 Released.",
         "note": "Decided during the telecon on 2017-11-14."
      },
      {
         "id": "285",
         "version": "2.2.9",
         "updated": "2017-09-07",
         "changedBy": "T.King",
         "description": "Added HGRTN, HERTN to the dictionary and to CoordinateSystemName Added Entropy to the dictionary and ParticleQuantity.",
         "note": "Decided during the telecon on 2017-09-14."
      },
      {
         "id": "284",
         "version": "2.2.9",
         "updated": "2017-02-09",
         "changedBy": "T.King",
         "description": "Added CadenceMin, CadenceMax, ExposureMin, ExposureMax, PartiallyRestricted, Confidence, ProviderName, MassRange, PitchAngleRange; Changed occurrence of Observatory/OperatingSpan from 1 to +.",
         "note": "Decided during the telecon on 2017-02-09."
      },
      {
         "id": "283",
         "version": "2.2.8",
         "updated": "2016-07-21",
         "changedBy": "T.King",
         "description": "SPASE version 2.2.8 Released.",
         "note": "Decided during the telecon on 2016-09-08."
      },
      {
         "id": "282",
         "version": "2.2.7",
         "updated": "2016-07-21",
         "changedBy": "T.King",
         "description": "Added JSON and CSV to the dictionary and to Format enumeration.",
         "note": "Decided during the telecon on 2016-07-21."
      },
      {
         "id": "281",
         "version": "2.2.7",
         "updated": "2016-07-21",
         "changedBy": "T.King",
         "description": "Changed occurrence of \"ParticleType\" under \"Particle\" from + to * and \"WaveType\" under \"Wave\" from 1 to 0.",
         "note": "Decided during the telecon on 2016-05-05."
      },
      {
         "id": "280",
         "version": "2.2.6",
         "updated": "2015-09-09",
         "changedBy": "T.King",
         "description": "SPASE version 2.2.6 Released.",
         "note": "Decided during the telecon on 2015-09-09."
      },
      {
         "id": "279",
         "version": "2.2.5",
         "updated": "2015-06-12",
         "changedBy": "T.King",
         "description": "Added coordinate systems to enumeration.",
         "note": "Decided at telecon on 2015-05-11."
      },
      {
         "id": "278",
         "version": "2.2.5",
         "updated": "2015-06-12",
         "changedBy": "T.King",
         "description": "Added moons and magnetosphere to planets; Only the larger moons which are typically encountered or simulated were added.",
         "note": "Decided at telecon on 2015-05-11."
      },
      {
         "id": "277",
         "version": "2.2.4",
         "updated": "2015-05-31",
         "changedBy": "T.King",
         "description": "SPASE version 2.2.4 Released.",
         "note": "Coordinated with SPASE Simulation Extension release."
      },
      {
         "id": "276",
         "version": "2.2.4",
         "updated": "2015-05-28",
         "changedBy": "T.King",
         "description": "Added coordinate systems MSO, VSO, KSO, KSM, JSO, JSM to the dictionary and CoordinateSystemName, Added SolarUVFlux and IMFClockAngle to the dictionary and MixedQuantity.",
         "note": ""
      },
      {
         "id": "275",
         "version": "2.2.3",
         "updated": "2014-05-22",
         "changedBy": "T.King",
         "description": "SPASE version 2.2.3 Released.",
         "note": "Decided during the telecon on 2014-05-22."
      },
      {
         "id": "274",
         "version": "2.2.3",
         "updated": "2012-05-24",
         "changedBy": "T.King",
         "description": "Added definition of \"Moon\" and Added to \"Earth\" enumeration as suggested by T. Narock.",
         "note": "Decided during the telecon on 2012-05-24."
      },
      {
         "id": "273",
         "version": "2.2.3",
         "updated": "2012-05-10",
         "changedBy": "T.King",
         "description": "Modified definitions of \"GEI\", \"AzimuthAngle\", \"ElevationAngle\" and \"PolarAngle\" as suggested by J. Merka; Added definition for \"ENP and Added to \"CoordinateSystem ame\" enumeration as suggested by J. Merka; Added definitions of \"PhotomultiplierTube\" and \"SolidStateDetector\" to the dictionary and \"IntrumentType\" as suggested by B. Weigel.",
         "note": "Decided during the telecon on 2012-05-10."
      },
      {
         "id": "272",
         "version": "2.2.3",
         "updated": "2012-03-15",
         "changedBy": "T.King",
         "description": "Modified definition of \"NumericalData\" as suggested by R. Weigel and D.A. Roberts; Modified definition of \"Potential\" as suggested by F. Mozer, D.A. Roberts and S. Fung; Added \"Magnetograph\" to the dictionary and \"Instrument Type\" as suggested by J. King.",
         "note": "Decided during the telecon on 2012-03-15."
      },
      {
         "id": "271",
         "version": "2.2.2",
         "updated": "2012-02-27",
         "changedBy": "T.King",
         "description": "SPASE version 2.2.2 Released.",
         "note": ""
      },
      {
         "id": "270",
         "version": "2.2.2",
         "updated": "2012-02-27",
         "changedBy": "T.King",
         "description": "Added \"Albedo\" to the dictionary and to \"WaveQuantity\" list.; Added \"ParticleRadius\" to the dictionary and to the \"ParticleQuantity\" list.",
         "note": "Decided during the HDMC face-to-face on 2012-02-21."
      },
      {
         "id": "269",
         "version": "2.2.2",
         "updated": "2012-02-02",
         "changedBy": "T.King",
         "description": "Added \"Sector Boundary Crossing\" to the dictionary and the \"Phenomenon Type\" list.; Added \"Product Key\" to the dictionary and under \"Access Information\".",
         "note": "Decided during the telecon on 2012-02-02."
      },
      {
         "id": "268",
         "version": "2.2.2",
         "updated": "2011-10-27",
         "changedBy": "T.King",
         "description": "Updated definition of \"Document\"; Added \"MIME Type\" to the dictionary and \"Document\" structure; Added \"Presentation\", \"Poster\", \"White Paper\", \"Technical Note\", \"Specification\" and \"Report\" to the dictionary and to \"Document Type\" enumeration; Removed \"Paper\" from dictionary.",
         "note": "Decided during the telecon on 2011-10-27."
      },
      {
         "id": "267",
         "version": "2.2.2",
         "updated": "2011-09-26",
         "changedBy": "T.King",
         "description": "Added \"RenderingHints\" under \"Element\"; Set occurrence for \"CoordinateRepresentation\" and \"CoordinateSystemName\" under \"CoordinateSystem\" to required (1); Set \"Size\" under \"Structure\" to required (1); Set \"AssociationID\" and \"AssociationType\" under \"Association\" to required (1).",
         "note": "Decided during the telecon on 2011-09-15."
      },
      {
         "id": "266",
         "version": "2.2.1",
         "updated": "2011-08-18",
         "changedBy": "T.King",
         "description": "SPASE version 2.2.1 Released.",
         "note": ""
      },
      {
         "id": "265",
         "version": "2.2.1",
         "updated": "2011-06-16",
         "changedBy": "T.King",
         "description": "Added \"Core\", \"Halo\", \"Strahl\" and \"Superhalo\" to the dictionary and to \"Qualifier\".",
         "note": "As supplied by D.A. Roberts 2011-04-21, modified by Todd King, Decided during the telecon on 2011-06-12."
      },
      {
         "id": "264",
         "version": "2.2.1",
         "updated": "2011-05-12",
         "changedBy": "T.King",
         "description": "Strike \"product\" from the definition of \"Numerical Data\".",
         "note": "Per e-mail from J. King 2011-02-21."
      },
      {
         "id": "263",
         "version": "2.2.0",
         "updated": "2011-01-06",
         "changedBy": "T.King",
         "description": "SPASE version 2.2.0 Released.",
         "note": ""
      },
      {
         "id": "262",
         "version": "2.2.0",
         "updated": "2011-01-06",
         "changedBy": "T.King",
         "description": "Updated definition for \"Irradiance\".",
         "note": ""
      },
      {
         "id": "261",
         "version": "2.2.0",
         "updated": "2010-09-17",
         "changedBy": "T.King",
         "description": "Added \"SSE_L\" to the dictionary and to \"Coordinate System Name\" list.",
         "note": "Decided during the telecon on 2010-09-16."
      },
      {
         "id": "260",
         "version": "2.2.0",
         "updated": "2010-09-15",
         "changedBy": "T.King",
         "description": "Added \"Excel\" to the dictionary and to the \"Format\" list; Added \"RenderingAxis\", and \"Index\" to the dictionary and under \"Rendering Hints\"; Added \"Vertical\", \"Horizontal\", and \"ColorBar\" to the dictionary and to the \"Rendering Hints\" enumeration; Changed cardinality of \"InvestigationName\" from 1 to +; Added \"Median, \" Maximum\" and \"Minimum\" to the dictionary and to \"Qualifier\" list.",
         "note": "Decided during the telecon on 2010-08-26."
      },
      {
         "id": "259",
         "version": "2.2.0",
         "updated": "2010-08-20",
         "changedBy": "T.King",
         "description": "Updated definitions of \"Outer\", \"Inner\", \"Heliosheath\" and \"Remote1AU\".",
         "note": "Decided during the telecon on 2010-07-08 and refined through subsequent e-mail."
      },
      {
         "id": "258",
         "version": "2.2.0",
         "updated": "2010-08-17",
         "changedBy": "T.King",
         "description": "Added \"S3_BUCKET\" to the dictionary and \"Encoding\"; Added \"Directional\" to the dictionary and to \"Qualifier\"; updated the definitions for \"EnergyFlux\" and \"Differential\".",
         "note": "Decided during the telecon on 2010-07-08."
      },
      {
         "id": "257",
         "version": "2.2.0",
         "updated": "2010-06-25",
         "changedBy": "T.King",
         "description": "Added \"Fluence\" to the dictionary and \"ParticleQuantity\"; Updated definitions for \"NumberFlux\", \"CoordinateSystem\" and \"Counts\"; Added \"HCC\" (Heliocentric Cartesian), \"HCR\" (Heliocentric Radial), HPC (Helioprojective Cartesian) and \"HPR\" (Helioprojective Radial) to the dictionary and under \"CoordinateSystemName\".",
         "note": "Decided during the telecon on 2010-06-10."
      },
      {
         "id": "256",
         "version": "2.2.0",
         "updated": "2010-05-21",
         "changedBy": "T.King",
         "description": "Added \"Heliosheath\" to the dictionary and to \"Heliosphere\" enumeration.",
         "note": "Decided during the telecon on 2010-05-13."
      },
      {
         "id": "255",
         "version": "2.2.0",
         "updated": "2010-04-15",
         "changedBy": "T.King",
         "description": "Added \"Hardcopy\" as an enumeration to the dictionary and to \"Format\"; Added \"Film\", \"Photographic Plate\", \"Photograph\", \"Microfiche\", \"Microfilm\", \"Print\" to the dictionary and to \"Hardcopy\" enumeration; Changed \"Observatory Group\" to \"Observatory Group ID\"; Updated definition of \"Observatory\" to make it more suitable for creation of conceptual Observatories.; Added \"Operating Span\" to the dictionary with elements \"Start Date\", \"Stop Date\" and \"Note\"; Added \"Operating Span\" to \"Instrument\" and \"Observatory\".",
         "note": "Decided during the telecon on 2010-04-15."
      },
      {
         "id": "254",
         "version": "2.1.0",
         "updated": "2010-03-19",
         "changedBy": "T.King",
         "description": "SPASE version 2.1.0 Released.",
         "note": "Decided during the telecon on 2010-03-18."
      },
      {
         "id": "253",
         "version": "2.0.3",
         "updated": "2010-03-19",
         "changedBy": "T.King",
         "description": "Updated definitions for \"Number Flux\", \"Energy Flux\", \"Differential\", and \"Integral\"; Added \"Dust\" to \"Measurement Type\" enumeration.",
         "note": "Decided during the telecon on 2010-03-18."
      },
      {
         "id": "252",
         "version": "2.0.3",
         "updated": "2010-02-04",
         "changedBy": "T.King",
         "description": "Added \"Former-PI\" to the dictionary and to \"Role\" enumeration; Added \"Note\" to \"Person\".",
         "note": "Decided during the telecon on 2010-02-04."
      },
      {
         "id": "251",
         "version": "2.0.2",
         "updated": "2009-11-18",
         "changedBy": "T.King",
         "description": "Modified definitions for \"Observatory\" and \"Instrument\".",
         "note": ""
      },
      {
         "id": "250",
         "version": "2.0.2",
         "updated": "2009-11-05",
         "changedBy": "T.King",
         "description": "Added \"StreamInteractionRegion\" to the dictionary and to \"PhenomenonType\" enumeration; Updated the definition of \"Coronal Mass Ejection\".",
         "note": ""
      },
      {
         "id": "249",
         "version": "2.0.2",
         "updated": "2009-10-08",
         "changedBy": "T.King",
         "description": "Added \"ArrivalDirection\" to the dictionary and to \"ParticleQuantity\" enumeration; Added \"InstrumentMode\" to the dictionary and to \"SupportQuantity\"; Updated definitions of \"ChargeState\" and \"AtomicNumberDetected\".",
         "note": ""
      },
      {
         "id": "248",
         "version": "2.0.2",
         "updated": "2009-09-24",
         "changedBy": "T.King",
         "description": "Added \"Atomic Number Detected\", \"MassNumber\" and \"ChargeState\" to the dictionary and to the \"ParticleQuantity\" enumeration; Also added \"DirectionAngle\" to \"ParticleQuantity\".",
         "note": ""
      },
      {
         "id": "247",
         "version": "2.0.1",
         "updated": "2009-07-12",
         "changedBy": "T.King",
         "description": "Updates to the definition \"Access URL\", \"Data Extent\", \"Polar\" and \"Sonic Mach Number\".",
         "note": ""
      },
      {
         "id": "246",
         "version": "2.0.1",
         "updated": "2009-07-12",
         "changedBy": "T.King",
         "description": "Added \"Sound Speed\" to the dictionary and to \"Particle Quantity\".",
         "note": "Decided in e-mail in 2009-06-??."
      },
      {
         "id": "245",
         "version": "2.0.1",
         "updated": "2009-07-12",
         "changedBy": "T.King",
         "description": "Updated the description of \"Index\" data type to explain wild cards.",
         "note": "Circulated in e-mail after the telecon on 2009-07-02."
      },
      {
         "id": "244",
         "version": "2.0.1",
         "updated": "2009-07-12",
         "changedBy": "T.King",
         "description": "Under \"Element\" replaced \"Component\" with \"Qualifier\" and allow multiple occurrences.",
         "note": "Decided during the telecon on 2009-07-02."
      },
      {
         "id": "243",
         "version": "2.0.1",
         "updated": "2009-07-12",
         "changedBy": "T.King",
         "description": "Changed \"Rendering Hints\" to 0-to-many occurrence.",
         "note": "Decided during the telecon on 2009-07-02."
      },
      {
         "id": "242",
         "version": "2.0.0",
         "updated": "2009-04-15",
         "changedBy": "T.King",
         "description": "SPASE version 2.0.0 Released.",
         "note": ""
      },
      {
         "id": "241",
         "version": "1.3.6",
         "updated": "2009-04-09",
         "changedBy": "T.King",
         "description": "Added \"Area\", \"Bandwidth\" and \"Solid Angle\" to \"Integral\", added \"Field-Aligned\", \"Group\", \"Perturbation\", \"Phase\" and \"Spectral\" to \"Qualifier\".",
         "note": "Decided during the telecon on 2009-04-09."
      },
      {
         "id": "240",
         "version": "1.3.6",
         "updated": "2009-04-09",
         "changedBy": "T.King",
         "description": "Added \"Child Event Of\" and \"Observed By\" to \"Association Type\".",
         "note": "Decided during the telecon on 2009-04-09."
      },
      {
         "id": "239",
         "version": "1.3.6",
         "updated": "2009-04-09",
         "changedBy": "T.King",
         "description": "Added \"ObservationExtent\" to \"Annotation\" with attributes of \"Observed Region\", \"Start Location\", \"Stop Location\" and \"Note\".",
         "note": "Decided during the telecon on 2009-04-09."
      },
      {
         "id": "238",
         "version": "1.3.6",
         "updated": "2009-04-09",
         "changedBy": "T.King",
         "description": "Added \"Classification Method\" as a enumeration with allowed values of \"Automatic\", \"Inspection\", and \"Inferred\"; Added \"ClassificationMethod\" to \"Annotation\".",
         "note": "Decided during the telecon on 2009-04-09."
      },
      {
         "id": "237",
         "version": "1.3.6",
         "updated": "2009-04-09",
         "changedBy": "T.King",
         "description": "Added \"Unlikely\" and \"Weak\" to the dictionary and modified \"Confidence Rating\" to have values \"Unlikely\", \"Weak\", \"Probable\", and \"Strong\".",
         "note": "Decided during the telecon on 2009-04-09."
      },
      {
         "id": "236",
         "version": "1.3.6",
         "updated": "2009-04-09",
         "changedBy": "T.King",
         "description": "Added \"Particle Type\" to \"Mixed\".",
         "note": "Decided during the telecon on 2009-04-09."
      },
      {
         "id": "235",
         "version": "1.3.6",
         "updated": "2009-04-09",
         "changedBy": "T.King",
         "description": "Added \"Array\" and \"Total\" to \"Qualifier\".",
         "note": "Decided during the telecon on 2009-04-09."
      },
      {
         "id": "234",
         "version": "1.3.6",
         "updated": "2009-04-09",
         "changedBy": "T.King",
         "description": "Added \"Atom\" and \"Neutron\" to \"Particle Type\".",
         "note": "Decided during the telecon on 2009-04-09."
      },
      {
         "id": "233",
         "version": "1.3.5",
         "updated": "2009-04-06",
         "changedBy": "T.King",
         "description": "Removed \"Spectral Range\" from under \"Energy Range\".",
         "note": "Decided by e-mail 2009-04-06."
      },
      {
         "id": "232",
         "version": "1.3.5",
         "updated": "2009-03-26",
         "changedBy": "T.King",
         "description": "Added \"Far Ultraviolet\", \"HE-304\", \"LBH Band\" and \"Soft X-Rays\" to the dictionary and \"Spectral Range\".",
         "note": "Decided during the telecon on 2009-03-26."
      },
      {
         "id": "231",
         "version": "1.3.5",
         "updated": "2009-03-26",
         "changedBy": "T.King",
         "description": "Added \"Absorption\", \"ACElectricField\", \"ACMagneticField\", \"DopplerFrequency\", \"Frequency\", \"PropagationTime\", and \"Wavelength\" to the dictionary and \"WaveQuantity\"; Added \"WaveType\" with values of \"Electromagnetic\", \"Electrostatic\", \"Photon\", \"PlasmaWaves\", \"Hydrodynamic\", and \"MHD\".",
         "note": "Decided during the telecon on 2009-03-26."
      },
      {
         "id": "230",
         "version": "1.3.5",
         "updated": "2009-03-26",
         "changedBy": "T.King",
         "description": "Updated definitions of \"Emissivity\", \"EquivalentWidth\", \"Gyrofrequency\", \"Intensity\", \"LineDepth\", \"PlasmaFrequency\", \"PoyntingFlux\"; Added \"WaveType\" with values of \"Electromagnetic\", \"Electrostatic\", \"Photon\", \"PlasmaWaves\", \"Hydrodynamic\", and \"MHD\".",
         "note": "Decided during the telecon on 2009-03-26."
      },
      {
         "id": "229",
         "version": "1.3.5",
         "updated": "2009-03-26",
         "changedBy": "T.King",
         "description": "Changed the name of \"Photon\" to \"Waves\" and \"PhotonQuantity\" to \"WaveQuantity\"; Added \"WaveType\" with values of \"Electromagnetic\", \"Electrostatic\", \"Photon\", \"PlasmaWaves\", \"Hydrodynamic\", and \"MHD\".",
         "note": "Decided during the telecon on 2009-03-26."
      },
      {
         "id": "228",
         "version": "1.3.5",
         "updated": "2009-03-26",
         "changedBy": "T.King",
         "description": "Added \"Plasmagram\", \"Spectrogram\" and \"Wave Form\" to the dictionary and to the \"Display Type\" list.",
         "note": "Decided during the telecon on 2009-03-26."
      },
      {
         "id": "227",
         "version": "1.3.5",
         "updated": "2009-03-26",
         "changedBy": "T.King",
         "description": "Various editorial updates to definitions, spelling and typos.",
         "note": "Editorial change permitted during the telecon on 2009-03-26."
      },
      {
         "id": "226",
         "version": "1.3.5",
         "updated": "2009-03-26",
         "changedBy": "T.King",
         "description": "Added \"ImageURL\" to \"Annotation\" and dictionary.",
         "note": "Decided during the telecon on 2009-03-26."
      },
      {
         "id": "225",
         "version": "1.3.5",
         "updated": "2009-03-26",
         "changedBy": "T.King",
         "description": "Added \"Access URL\" to \"Repository\" and \"Registry\".",
         "note": "Decided during the telecon on 2009-03-26."
      },
      {
         "id": "224",
         "version": "1.3.5",
         "updated": "2009-03-26",
         "changedBy": "T.King",
         "description": "Changed \"Mixed\" to a container with \"Qualifier\" and \"MixedQuantity\" as attributes; Added \"MixedQuantity\" enumeration with allowed values of \"AlfvenMachNumber\", \"Other\", \"PlasmaBeta\", \"ThermalPressure\", \"AlfvenVelocity\", \"MagnetosonicMachNumber\", \"PlasmaBeta\", and \"PlasmaFrequencyToGyrofrequencyRatio\".",
         "note": "Decided during the telecon on 2009-03-26."
      },
      {
         "id": "223",
         "version": "1.3.5",
         "updated": "2009-03-25",
         "changedBy": "T.King",
         "description": "Updated definitions for \"Numeric\" and \"Text\" data types.",
         "note": "Editorial Change."
      },
      {
         "id": "222",
         "version": "1.3.4",
         "updated": "2009-02-27",
         "changedBy": "T.King",
         "description": "Changed \"Wave\" to \"Waves\".",
         "note": "Editorial Change."
      },
      {
         "id": "221",
         "version": "1.3.4",
         "updated": "2009-02-26",
         "changedBy": "T.King",
         "description": "Added \"Annotation\" resource and \"AnnotationType\" and \"ConfidenceRating\" enumerations The terms \"Anomaly\", \"Event\", \"Feature\", \"Probable\", \"Good\", \"High\" were added to support the new enumerations.",
         "note": "Decided during the telecon on 2009-02-05."
      },
      {
         "id": "220",
         "version": "1.3.4",
         "updated": "2009-02-05",
         "changedBy": "T.King",
         "description": "Added \"Psuedo\" and \"Column\" to the dictionary and to \"Qualifier\" list.",
         "note": "Decided during the telecon on 2009-02-05."
      },
      {
         "id": "219",
         "version": "1.3.4",
         "updated": "2009-02-05",
         "changedBy": "T.King",
         "description": "Changed \"Line-of-sight\" to \"Line Of Sight\".",
         "note": "Decided during the telecon on 2009-02-05."
      },
      {
         "id": "218",
         "version": "1.3.4",
         "updated": "2009-02-05",
         "changedBy": "T.King",
         "description": "Added (restored) \"Intensity\" to the dictionary and \"Photon Quantity\" list.",
         "note": "Decided during the telecon on 2009-02-05."
      },
      {
         "id": "217",
         "version": "1.3.4",
         "updated": "2009-01-23",
         "changedBy": "T.King",
         "description": "Added \"Ion Chamber\" to the dictionary and \"Instrument Type\" list.",
         "note": "Decided during the telecon on 2009-01-22."
      },
      {
         "id": "216",
         "version": "1.3.4",
         "updated": "2009-01-22",
         "changedBy": "T.King",
         "description": "Changed occurrence of \"Particle\" to one or more.",
         "note": "Decided during the telecon on 2009-01-22."
      },
      {
         "id": "215",
         "version": "1.3.4",
         "updated": "2009-01-22",
         "changedBy": "T.King",
         "description": "Modified definition of \"Mixed\".",
         "note": "Decided during the telecon on 2009-01-22."
      },
      {
         "id": "214",
         "version": "1.3.4",
         "updated": "2009-01-14",
         "changedBy": "T.King",
         "description": "Modified \"Component\" to consist of \"I\", \"J\", \"K\"; Added \"DirectionAngle\", and \"Projection\" to \"Qualifier\"; Removed \"R\", \"Theta\", \"Phi\", \"X\", \"Y\", and \"Z\"; Added \"Direction Angle\" as an enumeration with values of \"AzimuthAngle\", \"PolarAngle\" and \"Elevation Angle\"; Added \"Projection\" as an enumeration with value of \"IJ\", \"IK\", and \"JK\".",
         "note": "Decided during the telecon on 2009-01-08."
      },
      {
         "id": "213",
         "version": "1.3.4",
         "updated": "2009-01-14",
         "changedBy": "T.King",
         "description": "Changed the definition of \"Text\" and converted \"Text\" to an enumeration with possible encoding types.",
         "note": "Decided during the telecon on 2009-01-08 and subsequent e-mails."
      },
      {
         "id": "212",
         "version": "1.3.4",
         "updated": "2009-01-14",
         "changedBy": "T.King",
         "description": "Added \"Language\" under \"Information URL\".",
         "note": "Editorial addition."
      },
      {
         "id": "211",
         "version": "1.3.4",
         "updated": "2009-01-14",
         "changedBy": "T.King",
         "description": "Added \"Linear Scale\" and \"Log Scale\" to the dictionary; Removed \"Log\" from the dictionary; Modified the definition of \"Linear\"; Removed reference scaled related usage; Updated the \"Scale\" enumeration with the name changes.",
         "note": "Decided during the telecon on 2009-01-08."
      },
      {
         "id": "210",
         "version": "1.3.4",
         "updated": "2009-01-14",
         "changedBy": "T.King",
         "description": "Added \"Wave\", \"Passive\" and \"Active\" to the dictionary; Added \"Wave\" as an enumeration; Removed \"Radio and Plasma Waves\" and \"Radio Soundings\" from the \"Measurement Type\" enumeration; Added \"Wave\" to the enumeration.",
         "note": "Decided during the telecon on 2009-01-08."
      },
      {
         "id": "209",
         "version": "1.3.3",
         "updated": "2008-10-16",
         "changedBy": "T.King",
         "description": "Added the \"Association\" container and \"Association Type\" enumeration to the dictionary; Modified the ontology to replace \"Association Type\" with the new \"Association\" container.",
         "note": "Decided during the telecon on 2008-10-16."
      },
      {
         "id": "208",
         "version": "1.3.2",
         "updated": "2008-10-15",
         "changedBy": "T.King",
         "description": "Changed \"Format\" under \"Rendering Hints\" to \"Value Format\" to eliminate name conflict with \"Format\".",
         "note": ""
      },
      {
         "id": "207",
         "version": "1.3.2",
         "updated": "2008-10-07",
         "changedBy": "T.King",
         "description": "Added \"Interstellar\" to the dictionary and Region.",
         "note": "Decided during the telecon on 2008-09-18."
      },
      {
         "id": "206",
         "version": "1.3.2",
         "updated": "2008-10-07",
         "changedBy": "T.King",
         "description": "Removed \"Charged Particle Flux\" from Measurement Type and the dictionary.",
         "note": "Decided during the telecon on 2008-09-18."
      },
      {
         "id": "205",
         "version": "1.3.1",
         "updated": "2008-09-04",
         "changedBy": "T.King",
         "description": "Added \"Count Rate\" to the dictionary and to \"Particle Quantity\".",
         "note": "Decided during the telecon on 2008-09-04."
      },
      {
         "id": "204",
         "version": "1.3.1",
         "updated": "2008-09-04",
         "changedBy": "T.King",
         "description": "Added \"Velocity\" to \"Support Quantity\".",
         "note": "Decided during the telecon on 2008-09-04."
      },
      {
         "id": "203",
         "version": "1.3.1",
         "updated": "2008-09-04",
         "changedBy": "T.King",
         "description": "Removed \"Measured\" and shifted containers under \"Measured\" up one level.",
         "note": "Decided during the telecon on 2008-09-04."
      },
      {
         "id": "202",
         "version": "1.3.1",
         "updated": "2008-09-04",
         "changedBy": "T.King",
         "description": "Changed \"Physical Parameter\" to \"Parameter\".",
         "note": "Decided during the telecon on 2008-09-04."
      },
      {
         "id": "201",
         "version": "1.3.1",
         "updated": "2008-09-04",
         "changedBy": "T.King",
         "description": "Added \"Symmetric\" to the dictionary and to Qualifier.",
         "note": "Decided during the telecon on 2008-08-21."
      },
      {
         "id": "200",
         "version": "1.3.1",
         "updated": "2008-09-04",
         "changedBy": "T.King",
         "description": "Added \"Rendering Hints\" with elements Format, AxisLabel, DisplayType, ScaleMin, ScaleMax, ScaleType and related enumerated values.",
         "note": "Decided during the telecon on 2008-08-21."
      },
      {
         "id": "199",
         "version": "1.3.1",
         "updated": "2008-07-31",
         "changedBy": "T.King",
         "description": "Added \"Platform\" to the dictionary and to the \"Instrument Type\" list, Removed \"Ephemeris\" from the \"Instrument Type\" list.",
         "note": "Decided during the telecon on 2008-07-31."
      },
      {
         "id": "198",
         "version": "1.3.1",
         "updated": "2008-07-31",
         "changedBy": "T.King",
         "description": "Added \"Ion Drift\" and \"Dust Detector\" to the dictionary and to the \"Instrument Type\" list.",
         "note": "Decided during the telecon on 2008-07-31."
      },
      {
         "id": "197",
         "version": "1.3.1",
         "updated": "2008-07-31",
         "changedBy": "T.King",
         "description": "Added \"Trace\" to the dictionary and to the \"Qualifier\" list.",
         "note": "Decided during the telecon on 2008-07-31."
      },
      {
         "id": "196",
         "version": "1.3.1",
         "updated": "2008-07-31",
         "changedBy": "T.King",
         "description": "Added \"Qualifier\" as a unified list of all qualifiers; Removed \"FieldQualifier\", \"PhotonQualifier\" and \"ParticleQualifier\" from the dictionary; Replaced each with \"Qualifier\" in the ontology; Added \"Qualifier\" to \"Support\".",
         "note": "Decided during the telecon on 2008-07-31."
      },
      {
         "id": "195",
         "version": "1.3.1",
         "updated": "2008-07-31",
         "changedBy": "T.King",
         "description": "Added \"Source Type\" as a list with possible values of Data, Layout, Ancillary, Browse and Thumbnail.",
         "note": "Decided during the telecon on 2008-06-26."
      },
      {
         "id": "194",
         "version": "1.3.1",
         "updated": "2008-07-31",
         "changedBy": "T.King",
         "description": "Added \"Source\" to the dictionary and to \"Granule\", Removed \"URL\", \"Checksum\" and \"DataExtent\" from \"Granule\" and added them under \"Source\".",
         "note": "Decided during the telecon on 2008-06-26."
      },
      {
         "id": "193",
         "version": "1.3.1",
         "updated": "2008-07-31",
         "changedBy": "T.King",
         "description": "Added \"Set\" to \"PhysicalParameter\".",
         "note": "Decided during the telecon on 2008-06-26."
      },
      {
         "id": "192",
         "version": "1.3.1",
         "updated": "2008-07-21",
         "changedBy": "T.King",
         "description": "Updated description of duration type.",
         "note": "Editorial correction."
      },
      {
         "id": "191",
         "version": "1.3.0",
         "updated": "2008-11-22",
         "changedBy": "T.King",
         "description": "SPASE version 1.3.0 Released.",
         "note": "Estimated release date."
      },
      {
         "id": "190",
         "version": "1.3.0",
         "updated": "2008-05-22",
         "changedBy": "T.King",
         "description": "Removed \"Array\" from the Field, Photon and Particle qualifier lists.",
         "note": "Decided during telecon on 2008-05-22."
      },
      {
         "id": "189",
         "version": "1.3.0",
         "updated": "2008-05-22",
         "changedBy": "T.King",
         "description": "Fixed spelling of \"Plasma Frequency\" in the \"Photon Qualifier\" list.",
         "note": ""
      },
      {
         "id": "188",
         "version": "1.3.0",
         "updated": "2008-05-22",
         "changedBy": "T.King",
         "description": "Added \"EIT Waves\" to the dictionary and \"Phenomenon Type\".",
         "note": "Decided during telecon on 2008-05-22."
      },
      {
         "id": "187",
         "version": "1.3.0",
         "updated": "2008-05-22",
         "changedBy": "T.King",
         "description": "Added \"Radio Burst\" to the dictionary and \"Phenomenon Type\".",
         "note": "Decided during telecon on 2008-05-22."
      },
      {
         "id": "186",
         "version": "1.3.0",
         "updated": "2008-05-22",
         "changedBy": "T.King",
         "description": "Added \"Coronal Hole\" to the dictionary and \"Phenomenon Type\".",
         "note": "Decided during telecon on 2008-05-22."
      },
      {
         "id": "185",
         "version": "1.3.0",
         "updated": "2008-05-22",
         "changedBy": "T.King",
         "description": "Added \"Active Region\" to the dictionary and \"Phenomenon Type\".",
         "note": "Decided during telecon on 2008-05-22."
      },
      {
         "id": "184",
         "version": "1.3.0",
         "updated": "2008-05-22",
         "changedBy": "T.King",
         "description": "Changed \"End Date\" to \"Stop Date\" and \"Relative End Date\" to \"Relative Stop Date\".",
         "note": "Decided during telecon on 2008-05-22."
      },
      {
         "id": "183",
         "version": "1.3.0",
         "updated": "2008-05-22",
         "changedBy": "T.King",
         "description": "Made \"Encoding Type\" multiple occurrence (*) in \"Access Information\".",
         "note": "Decided during telecon on 2008-05-22."
      },
      {
         "id": "182",
         "version": "1.3.0",
         "updated": "2008-05-22",
         "changedBy": "T.King",
         "description": "Added \"TAR\" to the dictionary and to \"Encoding Type\".",
         "note": "Decided during telecon on 2008-05-22."
      },
      {
         "id": "181",
         "version": "1.3.0",
         "updated": "2008-04-24",
         "changedBy": "T.King",
         "description": "Restored \"Observatory Group\" and made it multiple occurrence.",
         "note": "Decided during telecon on 2008-05-08."
      },
      {
         "id": "180",
         "version": "1.3.0",
         "updated": "2008-05-20",
         "changedBy": "T.King",
         "description": "Changed cardinality of \"Phenomenon Type\" to + in Catalog.",
         "note": "Decided by e-mail on 2008-05-20."
      },
      {
         "id": "179",
         "version": "1.3.0",
         "updated": "2008-05-20",
         "changedBy": "T.King",
         "description": "Added \"MagneticCloud\" to the dictionary and \"PhenomenonType\".",
         "note": "Decided by e-mail on 2008-05-20."
      },
      {
         "id": "178",
         "version": "1.3.0",
         "updated": "2008-04-25",
         "changedBy": "T.King",
         "description": "Removed \"Provider Release Date\" from dictionary.",
         "note": "Decided during telecon on 2008-04-24."
      },
      {
         "id": "177",
         "version": "1.3.0",
         "updated": "2008-04-24",
         "changedBy": "T.King",
         "description": "Removed \"Observatory Group\" from dictionary and Observatory.",
         "note": "Decided during telecon on 2008-04-24."
      },
      {
         "id": "176",
         "version": "1.3.0",
         "updated": "2008-04-24",
         "changedBy": "T.King",
         "description": "Removed \"Structure Type\" from dictionary and Structure.",
         "note": "Decided during telecon on 2008-04-24."
      },
      {
         "id": "175",
         "version": "1.3.0",
         "updated": "2008-??-??",
         "changedBy": "T.King",
         "description": "Added PhysicalParameter to Catalog and DisplayData.",
         "note": ""
      },
      {
         "id": "174",
         "version": "1.3.0",
         "updated": "2008-??-??",
         "changedBy": "T.King",
         "description": "Added Electromagnetic to FieldQuantity.",
         "note": ""
      },
      {
         "id": "173",
         "version": "1.3.0",
         "updated": "2008-??-??",
         "changedBy": "T.King",
         "description": "Moved CrossSpectrum from FieldQuantity to FieldQualifier.",
         "note": ""
      },
      {
         "id": "172",
         "version": "1.3.0",
         "updated": "2008-??-??",
         "changedBy": "T.King",
         "description": "Added Number Flux to Particle Quantity.",
         "note": ""
      },
      {
         "id": "171",
         "version": "1.3.0",
         "updated": "2008-??-??",
         "changedBy": "T.King",
         "description": "Added Document Type enumeration and Paper as an item.",
         "note": ""
      },
      {
         "id": "170",
         "version": "1.3.0",
         "updated": "2008-??-??",
         "changedBy": "T.King",
         "description": "Introduced Document resource.",
         "note": ""
      },
      {
         "id": "169",
         "version": "1.3.0",
         "updated": "2007-??-??",
         "changedBy": "T.King",
         "description": "Added Language to the dictionary.",
         "note": ""
      },
      {
         "id": "168",
         "version": "1.3.0",
         "updated": "2007-??-??",
         "changedBy": "T.King",
         "description": "Added Contributor and Publisher to the dictionary and Role.",
         "note": ""
      },
      {
         "id": "167",
         "version": "1.3.0",
         "updated": "2007-??-??",
         "changedBy": "T.King",
         "description": "Added Fax Number to Person.",
         "note": ""
      },
      {
         "id": "166",
         "version": "1.3.0",
         "updated": "2007-??-??",
         "changedBy": "T.King",
         "description": "Added Units, UnitsConversion, ValidMin, ValidMax, FillValue to Element.",
         "note": ""
      },
      {
         "id": "165",
         "version": "1.3.0",
         "updated": "2007-??-??",
         "changedBy": "T.King",
         "description": "Added SpectralRange to EnergyRange, FrequencyRange and WavelengthRange.",
         "note": ""
      },
      {
         "id": "164",
         "version": "1.3.0",
         "updated": "2007-??-??",
         "changedBy": "T.King",
         "description": "Moved Extension into each resource class.",
         "note": ""
      },
      {
         "id": "163",
         "version": "1.3.0",
         "updated": "2007-??-??",
         "changedBy": "T.King",
         "description": "Added SupportQuantity to Support.",
         "note": ""
      },
      {
         "id": "162",
         "version": "1.3.0",
         "updated": "2007-??-??",
         "changedBy": "T.King",
         "description": "Added WavelengthRange to the dictionary; Added BandName to Bin.",
         "note": ""
      },
      {
         "id": "161",
         "version": "1.2.2",
         "updated": "2008-08-14",
         "changedBy": "T.King",
         "description": "SPASE version 1.2.2 Released.",
         "note": ""
      },
      {
         "id": "160",
         "version": "1.2.2",
         "updated": "2008-07-31",
         "changedBy": "L.F.Bargatze",
         "description": "Added Repository ID and Stop Date.",
         "note": "Permitted during 2008-06-26 telecon."
      },
      {
         "id": "159",
         "version": "1.2.2",
         "updated": "2008-07-31",
         "changedBy": "L.F.Bargatze",
         "description": "AzimuthalAngle, Dayside, ElectricFieldInstrument, Frequency, HighLatitude, LowLatitude, Nightside, PolarAngle, ProviderID, ProviderReleaseDate, RTF, SGI, SoftXRays, SpatialRange, TeX, Wavelength, Wavenumber, XDR.",
         "note": "Permitted during 2008-06-26 telecon."
      },
      {
         "id": "158",
         "version": "1.2.2",
         "updated": "2008-07-31",
         "changedBy": "L.F.Bargatze",
         "description": "Added \"Ionosphere\" as a list.",
         "note": "Permitted during 2008-06-26 telecon."
      },
      {
         "id": "157",
         "version": "1.2.2",
         "updated": "2008-07-31",
         "changedBy": "L.F.Bargatze",
         "description": "Removed \"Near Earth\" as a list.",
         "note": "Permitted during 2008-06-26 telecon."
      },
      {
         "id": "156",
         "version": "1.2.2",
         "updated": "2008-07-31",
         "changedBy": "L.F.Bargatze",
         "description": "Removed \"Field Component\" from lists.",
         "note": "Permitted during 2008-06-26 telecon."
      },
      {
         "id": "155",
         "version": "1.2.2",
         "updated": "2008-07-31",
         "changedBy": "L.F.Bargatze",
         "description": "Removed \"Offline\" from \"Medium\".",
         "note": "Permitted during 2008-06-26 telecon."
      },
      {
         "id": "154",
         "version": "1.2.2",
         "updated": "2008-07-31",
         "changedBy": "L.F.Bargatze",
         "description": "Changed \"Observatory Group\" to \"Observatory Name\".",
         "note": "Permitted during 2008-06-26 telecon."
      },
      {
         "id": "153",
         "version": "1.2.2",
         "updated": "2008-07-31",
         "changedBy": "L.F.Bargatze",
         "description": "Changed \"Time-of-flight\" to \"TimeOfFlight\".",
         "note": "Permitted during 2008-06-26 telecon."
      },
      {
         "id": "152",
         "version": "1.2.2",
         "updated": "2008-07-31",
         "changedBy": "L.F.Bargatze",
         "description": "Changed \"RetardingPotentialAnalyser\" to \"RetardingPotentialAnalyzer\".",
         "note": "Permitted during 2008-06-26 telecon."
      },
      {
         "id": "151",
         "version": "1.2.2",
         "updated": "2008-07-31",
         "changedBy": "L.F.Bargatze",
         "description": "Changed \"Plasmafrequency\" to \"PlasmaFrequency\".",
         "note": "Permitted during 2008-06-26 telecon."
      },
      {
         "id": "150",
         "version": "1.2.1",
         "updated": "2008-03-20",
         "changedBy": "T.King",
         "description": "SPASE version 1.2.1 Released.",
         "note": ""
      },
      {
         "id": "149",
         "version": "1.2.1",
         "updated": "2008-03-20",
         "changedBy": "T.King",
         "description": "Removed Flux and Intensity.",
         "note": ""
      },
      {
         "id": "148",
         "version": "1.2.1",
         "updated": "2008-03-20",
         "changedBy": "T.King",
         "description": "Updated definitions of Vector and Size.",
         "note": ""
      },
      {
         "id": "147",
         "version": "1.2.1",
         "updated": "2008-03-20",
         "changedBy": "T.King",
         "description": "Added Carrington and HCI to Coordinate System.",
         "note": ""
      },
      {
         "id": "146",
         "version": "1.2.1",
         "updated": "2008-03-20",
         "changedBy": "T.King",
         "description": "Added Anisotropy to Particle Qualifier.",
         "note": ""
      },
      {
         "id": "145",
         "version": "1.2.1",
         "updated": "2008-03-20",
         "changedBy": "T.King",
         "description": "Added Energy Flux to Particle Quantity and Photon Quantity.",
         "note": ""
      },
      {
         "id": "144",
         "version": "1.2.1",
         "updated": "2008-03-20",
         "changedBy": "T.King",
         "description": "Added Flow Speed, Number Flux to Particle Quantity.",
         "note": ""
      },
      {
         "id": "143",
         "version": "1.2.1",
         "updated": "2008-03-20",
         "changedBy": "T.King",
         "description": "Added Archive Specialist to Role.",
         "note": ""
      },
      {
         "id": "142",
         "version": "1.2.1",
         "updated": "2008-03-20",
         "changedBy": "T.King",
         "description": "Added TimeOfFlight, Interferometer, Photometer, Radiometer, Coronograph, ProportionalCounter, ScintillationDetector, Photopolarimeter, GeigerMuellerTube, NeutralParticleDetector, Sounder, NeutralAtomImager, RetardingPotentialAnalyser, MultispectralImager, ImagingSpectrometer, Riometer, Unspecified to Instrument Type.",
         "note": ""
      },
      {
         "id": "141",
         "version": "1.2.1",
         "updated": "2008-03-20",
         "changedBy": "T.King",
         "description": "Added White-light, H-alpha, He-10830, Ca-K, Na-D, Extreme Ultraviolet, Ni-6768, K-7699 to the dictionary and to SpectralRange.",
         "note": ""
      },
      {
         "id": "140",
         "version": "1.2.1",
         "updated": "2008-03-20",
         "changedBy": "T.King",
         "description": "Added EnergyRange and WavelengthRange to PhotonQuantity.",
         "note": ""
      },
      {
         "id": "139",
         "version": "1.2.1",
         "updated": "2008-03-20",
         "changedBy": "T.King",
         "description": "Added Characteristic to ParticleQualifier.",
         "note": ""
      },
      {
         "id": "138",
         "version": "1.2.1",
         "updated": "2008-03-20",
         "changedBy": "T.King",
         "description": "Added Current, Gyrofrequency, Energy, PlasmaFrequency to the appropriate ParticleQuantity, FieldQuantity, or PhotonQuantity.",
         "note": ""
      },
      {
         "id": "137",
         "version": "1.2.1",
         "updated": "2008-03-20",
         "changedBy": "T.King",
         "description": "Added Parallel and PhaseAngle to FieldQualifier.",
         "note": ""
      },
      {
         "id": "136",
         "version": "1.2.1",
         "updated": "2008-03-20",
         "changedBy": "T.King",
         "description": "Added SpacecraftOrbitPlane to CoordinateSystemName.",
         "note": ""
      },
      {
         "id": "135",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "SPASE version 1.2.0 Released.",
         "note": ""
      },
      {
         "id": "134",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Added WGS84 as a Coordinate System Name.",
         "note": ""
      },
      {
         "id": "133",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Removed Instrument Region from NumericalData.",
         "note": ""
      },
      {
         "id": "132",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Added ITM regions under Near Surface.",
         "note": ""
      },
      {
         "id": "131",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Added Location container under Observatory and added the elements Latitude, Longitude, Elevation, ObservatoryGroup.",
         "note": ""
      },
      {
         "id": "130",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Added \"Theta\" and \"Phi\" to \"Component\".",
         "note": ""
      },
      {
         "id": "129",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Removed D, H, T, N, Latitude, Longitude from the dictionary.",
         "note": ""
      },
      {
         "id": "128",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Added \"Spectrum\" to \"Measurement Type\".",
         "note": ""
      },
      {
         "id": "127",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Removed \"Dynamic Spectra\" from \"Measurement Type\".",
         "note": ""
      },
      {
         "id": "126",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Under \"Physical Parameter\" made \"Parameter Key\" optional and \"Name\" required.",
         "note": ""
      },
      {
         "id": "125",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Changed name of \"Date\" data type to \"DateTime\" and \"Time\" data type to \"Duration\" to be consistent with conventional terminology.",
         "note": ""
      },
      {
         "id": "124",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Made \"URL\" in \"Granule\" multi-valued.",
         "note": ""
      },
      {
         "id": "123",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Added \"Extension\" as a container.",
         "note": ""
      },
      {
         "id": "122",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Added Postscript as a Format.",
         "note": ""
      },
      {
         "id": "121",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Added ProcessingLevel, Removed Theta and Phi.",
         "note": ""
      },
      {
         "id": "120",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Converted Support to an enumeration with Other, Positional and Temporal as members.",
         "note": ""
      },
      {
         "id": "119",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Added InstrumentStatus to MeasurementType.",
         "note": ""
      },
      {
         "id": "118",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Made Component and enumeration with the values from Orientation.",
         "note": ""
      },
      {
         "id": "117",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Removed Orientation.",
         "note": ""
      },
      {
         "id": "116",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Added Element under Dimension.",
         "note": ""
      },
      {
         "id": "115",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Added Element with members of Name, Index, ParameterKey and Component.",
         "note": ""
      },
      {
         "id": "114",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Added Deputy-PI to Roles; Changed cardinality of Caveats under Instrument to optional.",
         "note": ""
      },
      {
         "id": "113",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Cardinality of Access Information changed from 1 to + (1 or more).",
         "note": ""
      },
      {
         "id": "112",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Modified definitions of H, Flux, Integral and Differential.",
         "note": ""
      },
      {
         "id": "111",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Added Metadata Contact to Role.",
         "note": ""
      },
      {
         "id": "110",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Changed InstrumentID in DisplayData and NumericalData to one or more occurrences.",
         "note": ""
      },
      {
         "id": "109",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Defined PriorID and added PriorID to ResourceHeader and Granule.",
         "note": ""
      },
      {
         "id": "108",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Added Sequence as a element type and changes Size to a Sequence.",
         "note": ""
      },
      {
         "id": "107",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Added Ephemeris as an Instrument Type.",
         "note": ""
      },
      {
         "id": "106",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Updated Phi and Theta definitions.",
         "note": ""
      },
      {
         "id": "105",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Added Longitude and Latitude to Orientation.",
         "note": ""
      },
      {
         "id": "104",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Added Expiration Date to Resource Header and Granule.",
         "note": ""
      },
      {
         "id": "103",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Added Uncertainty and Standard Deviation to qualifiers.",
         "note": ""
      },
      {
         "id": "102",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Added the ValidMin, ValidMax and FillValue to Physical Parameter.",
         "note": ""
      },
      {
         "id": "101",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Added Data Extent to Access URL and Granule.",
         "note": ""
      },
      {
         "id": "100",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Added Data Extent, Bytes and Per to describe the size of a resource.",
         "note": ""
      },
      {
         "id": "99",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Added all planets, Comet and Asteroid as regions.",
         "note": ""
      },
      {
         "id": "98",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Added Note as a term and added Note under Timespan.",
         "note": ""
      },
      {
         "id": "97",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Added Checksum, Hash Value, Hash Function, MD5 and SHA1, SHA256.",
         "note": ""
      },
      {
         "id": "96",
         "version": "1.2.0",
         "updated": "2007-05-22",
         "changedBy": "T.King",
         "description": "Added Aurora and Substorm under Phenomenon Type.",
         "note": ""
      },
      {
         "id": "95",
         "version": "1.1.1",
         "updated": "????-??-??",
         "changedBy": "T.King",
         "description": "Changed AccessURL to type container.",
         "note": ""
      },
      {
         "id": "94",
         "version": "1.1.1",
         "updated": "????-??-??",
         "changedBy": "T.King",
         "description": "Modified definition of Units.",
         "note": ""
      },
      {
         "id": "93",
         "version": "1.1.1",
         "updated": "????-??-??",
         "changedBy": "T.King",
         "description": "Removed enumeration of Component.",
         "note": ""
      },
      {
         "id": "92",
         "version": "1.1.1",
         "updated": "????-??-??",
         "changedBy": "T.King",
         "description": "Changed InstrumentID and Bin to multiple occurrence.",
         "note": ""
      },
      {
         "id": "91",
         "version": "1.1.0",
         "updated": "2006-08-31",
         "changedBy": "T.King",
         "description": "SPASE version 1.1.0 Released.",
         "note": ""
      },
      {
         "id": "90",
         "version": "1.1.0",
         "updated": "2006-08-31",
         "changedBy": "T.King",
         "description": "Added Statistics to Phenomenon Type.",
         "note": ""
      },
      {
         "id": "89",
         "version": "1.1.0",
         "updated": "2006-08-31",
         "changedBy": "T.King",
         "description": "Added Field Component container.",
         "note": ""
      },
      {
         "id": "88",
         "version": "1.1.0",
         "updated": "2006-08-31",
         "changedBy": "T.King",
         "description": "Added ChargeState to Particle Quantity.",
         "note": ""
      },
      {
         "id": "87",
         "version": "1.1.0",
         "updated": "2006-08-31",
         "changedBy": "T.King",
         "description": "Removed \"Instrument Name\" and \"Observatory Name\".",
         "note": ""
      },
      {
         "id": "86",
         "version": "1.1.0",
         "updated": "2006-08-31",
         "changedBy": "T.King",
         "description": "Changed \"alias\" to \"alternate name\".",
         "note": ""
      },
      {
         "id": "85",
         "version": "1.1.0",
         "updated": "2006-08-31",
         "changedBy": "T.King",
         "description": "Added Release Date to Resource Header, Person, and Granule.",
         "note": ""
      },
      {
         "id": "84",
         "version": "1.1.0",
         "updated": "2006-08-31",
         "changedBy": "T.King",
         "description": "Added Parameter Key under Physical Parameter.",
         "note": ""
      },
      {
         "id": "83",
         "version": "1.1.0",
         "updated": "2006-08-31",
         "changedBy": "T.King",
         "description": "Added Granule.",
         "note": ""
      },
      {
         "id": "82",
         "version": "1.1.0",
         "updated": "2006-08-31",
         "changedBy": "T.King",
         "description": "Changed Repository Name to Repository ID under Access Information.",
         "note": ""
      },
      {
         "id": "81",
         "version": "1.1.0",
         "updated": "2006-08-31",
         "changedBy": "T.King",
         "description": "Removed Access Right from Display Data.",
         "note": ""
      },
      {
         "id": "80",
         "version": "1.1.0",
         "updated": "2006-08-31",
         "changedBy": "T.King",
         "description": "Changed definition of Investigation Name.",
         "note": ""
      },
      {
         "id": "79",
         "version": "1.1.0",
         "updated": "2006-08-31",
         "changedBy": "T.King",
         "description": "Removed Observatory ID from Numerical Data and Display Data.",
         "note": ""
      },
      {
         "id": "78",
         "version": "1.1.0",
         "updated": "2006-08-31",
         "changedBy": "T.King",
         "description": "Added ObservatoryID under Instrument.",
         "note": ""
      },
      {
         "id": "77",
         "version": "1.1.0",
         "updated": "2006-08-31",
         "changedBy": "T.King",
         "description": "Updated Pressure definition.",
         "note": ""
      },
      {
         "id": "76",
         "version": "1.1.0",
         "updated": "2006-08-31",
         "changedBy": "T.King",
         "description": "Removed Coordinate System from Particle Physical Parameter.",
         "note": ""
      },
      {
         "id": "75",
         "version": "1.1.0",
         "updated": "2006-08-31",
         "changedBy": "T.King",
         "description": "Added Parent ID, Energy Range, Frequency Range, Azimuthal Angle Range, Polar Angle Range, Atomic Number Range, Integral, Differential, Low and High.",
         "note": ""
      },
      {
         "id": "74",
         "version": "1.1.0",
         "updated": "2006-08-31",
         "changedBy": "T.King",
         "description": "Added Base64 as an Encoding.",
         "note": ""
      },
      {
         "id": "73",
         "version": "1.1.0",
         "updated": "2006-08-31",
         "changedBy": "T.King",
         "description": "Added J2000 as a coordinate system.",
         "note": ""
      },
      {
         "id": "72",
         "version": "1.1.0",
         "updated": "2006-08-31",
         "changedBy": "T.King",
         "description": "Added MAT_4, MAT_6, MAT_7 and VOTable as a Format.",
         "note": ""
      },
      {
         "id": "71",
         "version": "1.1.0",
         "updated": "2006-08-31",
         "changedBy": "T.King",
         "description": "Updated description of \"Resource ID\".",
         "note": ""
      },
      {
         "id": "70",
         "version": "1.1.0",
         "updated": "2006-08-31",
         "changedBy": "T.King",
         "description": "Added \"Service\" resource class.",
         "note": ""
      },
      {
         "id": "69",
         "version": "1.1.0",
         "updated": "2006-08-31",
         "changedBy": "T.King",
         "description": "Made data type of \"Mixed\" text.",
         "note": ""
      },
      {
         "id": "68",
         "version": "1.1.0",
         "updated": "2006-08-31",
         "changedBy": "T.King",
         "description": "Changed \"Instrument type\" to allow multiple occurrences.",
         "note": ""
      },
      {
         "id": "67",
         "version": "1.1.0",
         "updated": "2006-08-31",
         "changedBy": "T.King",
         "description": "Modified definition of \"Near Earth\".",
         "note": ""
      },
      {
         "id": "66",
         "version": "1.1.0",
         "updated": "2006-08-31",
         "changedBy": "T.King",
         "description": "Removed \"Orbital\".",
         "note": ""
      },
      {
         "id": "65",
         "version": "1.0.3",
         "updated": "2006-04-27",
         "changedBy": "T.King",
         "description": "SPASE version 1.0.3 Released.",
         "note": ""
      },
      {
         "id": "64",
         "version": "1.0.3",
         "updated": "2006-04-27",
         "changedBy": "T.King",
         "description": "Correct links to \"Stokes Parameters\".",
         "note": ""
      },
      {
         "id": "63",
         "version": "1.0.3",
         "updated": "2006-04-27",
         "changedBy": "T.King",
         "description": "Changed \"Spectral Range Name\" to \"Spectral Range\" for consistency.",
         "note": ""
      },
      {
         "id": "62",
         "version": "1.0.3",
         "updated": "2006-04-27",
         "changedBy": "T.King",
         "description": "Added \"Near Earth\" under \"Heliosphere\" and added \"Outside Bowshock\" and \"Orbital\" under \"Near Earth\".",
         "note": ""
      },
      {
         "id": "61",
         "version": "1.0.3",
         "updated": "2006-04-27",
         "changedBy": "T.King",
         "description": "Moved Mass and Size under \"Particle Physical Quantity\" and changed to type item.",
         "note": ""
      },
      {
         "id": "60",
         "version": "1.0.3",
         "updated": "2006-04-27",
         "changedBy": "T.King",
         "description": "Dropped N, Z, Q from dictionary.",
         "note": ""
      },
      {
         "id": "59",
         "version": "1.0.3",
         "updated": "2006-04-27",
         "changedBy": "T.King",
         "description": "Added \"NCAR\" as a \"Format\".",
         "note": ""
      },
      {
         "id": "58",
         "version": "1.0.3",
         "updated": "2006-04-27",
         "changedBy": "T.King",
         "description": "Changed \"HF Radar\" to \"Radar\".",
         "note": ""
      },
      {
         "id": "57",
         "version": "1.0.3",
         "updated": "2006-04-27",
         "changedBy": "T.King",
         "description": "Made \"Acknowledgement\" options.",
         "note": ""
      },
      {
         "id": "56",
         "version": "1.0.3",
         "updated": "2006-04-27",
         "changedBy": "T.King",
         "description": "Move \"Access Rights\" under \"Access Information\".",
         "note": ""
      },
      {
         "id": "55",
         "version": "1.0.3",
         "updated": "2006-04-27",
         "changedBy": "T.King",
         "description": "Changed definition of \"Item\" to indicate it is a value of an enumeration.",
         "note": ""
      },
      {
         "id": "54",
         "version": "1.0.3",
         "updated": "2006-04-27",
         "changedBy": "T.King",
         "description": "Changed \"Observed Region\" and \"Instrument Region\" to enumerations.",
         "note": ""
      },
      {
         "id": "53",
         "version": "1.0.3",
         "updated": "2006-04-27",
         "changedBy": "T.King",
         "description": "Added \"Earth\" as a enumeration with \"Magnetosphere\" as a member.",
         "note": ""
      },
      {
         "id": "52",
         "version": "1.0.2",
         "updated": "2006-03-07",
         "changedBy": "T.King",
         "description": "SPASE version 1.0.2 Released.",
         "note": ""
      },
      {
         "id": "51",
         "version": "1.0.2",
         "updated": "2006-03-07",
         "changedBy": "T.King",
         "description": "Added the \"Registry\" resource class.",
         "note": ""
      },
      {
         "id": "50",
         "version": "1.0.2",
         "updated": "2006-03-07",
         "changedBy": "T.King",
         "description": "Added the \"Repository\" resource class.",
         "note": ""
      },
      {
         "id": "49",
         "version": "1.0.2",
         "updated": "2006-03-07",
         "changedBy": "T.King",
         "description": "Added \"Caveats\" under \"Instrument\".",
         "note": ""
      },
      {
         "id": "48",
         "version": "1.0.2",
         "updated": "2006-03-07",
         "changedBy": "T.King",
         "description": "Added \"ProjectScientist\" to the dictionary and under \"Role\".",
         "note": ""
      },
      {
         "id": "47",
         "version": "1.0.1",
         "updated": "2006-01-03",
         "changedBy": "T.King",
         "description": "SPASE version 1.0.1 Released.",
         "note": ""
      },
      {
         "id": "46",
         "version": "1.0.1",
         "updated": "2006-01-03",
         "changedBy": "T.King",
         "description": "Added \"Pressure\" under \"ParticleQuantity\".",
         "note": ""
      },
      {
         "id": "45",
         "version": "1.0.1",
         "updated": "2006-01-03",
         "changedBy": "T.King",
         "description": "Changes in value type for elements: \"Exposure\", \"InputResourceID\", \"RepositoryName\", and \"Size\".",
         "note": ""
      },
      {
         "id": "44",
         "version": "1.0.0",
         "updated": "2005-11-22",
         "changedBy": "T.King",
         "description": "SPASE version 1.0.0 Released.",
         "note": ""
      },
      {
         "id": "43",
         "version": "1.0.0",
         "updated": "2005-11-22",
         "changedBy": "T.King",
         "description": "Added \"PhenomenonType\" list and defined terms in the list.",
         "note": ""
      },
      {
         "id": "42",
         "version": "1.0.0",
         "updated": "2005-11-22",
         "changedBy": "T.King, and others",
         "description": "Incorporate comments from consortium members on the \"final\" draft before the release of version 1.0.",
         "note": ""
      },
      {
         "id": "41",
         "version": "0.99.9",
         "updated": "2005-11-18",
         "changedBy": "T.King",
         "description": "SPASE version 0.99.9 Released.",
         "note": ""
      },
      {
         "id": "40",
         "version": "0.99.9",
         "updated": "2005-11-18",
         "changedBy": "T.King, D.A. Roberts",
         "description": "Incorporate comments from consortium members on the \"final\" draft before the release of version 1.0.",
         "note": ""
      },
      {
         "id": "39",
         "version": "0.99.8",
         "updated": "2005-11-03",
         "changedBy": "T.King",
         "description": "SPASE version 0.99.8 Released.",
         "note": ""
      },
      {
         "id": "38",
         "version": "0.99.8",
         "updated": "2005-11-03",
         "changedBy": "T.King",
         "description": "General clean-up and alignment with the schema.",
         "note": "Agreed upon at the APL meeting, 2005-11-02 to 2005-11-04."
      },
      {
         "id": "37",
         "version": "0.99.7",
         "updated": "2005-09-08",
         "changedBy": "T.King",
         "description": "SPASE version 0.99.7 Released.",
         "note": ""
      },
      {
         "id": "36",
         "version": "0.99.7",
         "updated": "2005-09-08",
         "changedBy": "T.King",
         "description": "Changed \"AcceptableAbbreviation\" to \"ConventionalAbbreviation\" since abbreviations are not supported in the model.",
         "note": ""
      },
      {
         "id": "35",
         "version": "0.99.7",
         "updated": "2005-09-08",
         "changedBy": "T.King",
         "description": "Updated definition of \"Magnetotail\", etc. to be generic; Added \"Earth\" examples.",
         "note": ""
      },
      {
         "id": "34",
         "version": "0.99.7",
         "updated": "2005-09-08",
         "changedBy": "T.King",
         "description": "Added all planets and the Moon under \"Body\".",
         "note": ""
      },
      {
         "id": "33",
         "version": "0.99.7",
         "updated": "2005-09-08",
         "changedBy": "T.King",
         "description": "Added \"Near1AU\" under Heliosphere; Added \"Body\" under \"Atmosphere-Ionosphere\", \"Magnetosphere\" and \"Ground\".",
         "note": ""
      },
      {
         "id": "32",
         "version": "0.99.7",
         "updated": "2005-09-08",
         "changedBy": "T.King",
         "description": "Added \"WaveForm\", \"Spectra\", etc. under \"AnalysisMethod\".",
         "note": ""
      },
      {
         "id": "31",
         "version": "0.99.7",
         "updated": "2005-09-08",
         "changedBy": "T.King",
         "description": "Added \"AnalysisMethod\" under \"Field\" \"Electric\" and \"Magnetic\".",
         "note": ""
      },
      {
         "id": "30",
         "version": "0.99.7",
         "updated": "2005-09-08",
         "changedBy": "T.King",
         "description": "Move Polar Angle under Particle \"IndependentVariable\".",
         "note": ""
      },
      {
         "id": "29",
         "version": "0.99.7",
         "updated": "2005-09-08",
         "changedBy": "T.King",
         "description": "Drop Speed from Particle \"IndependentVariable\".",
         "note": ""
      },
      {
         "id": "28",
         "version": "0.99.7",
         "updated": "2005-09-08",
         "changedBy": "T.King",
         "description": "Move Wavelength and Wave Number under Photon \"IndependentVariable\".",
         "note": ""
      },
      {
         "id": "27",
         "version": "0.99.7",
         "updated": "2005-09-08",
         "changedBy": "T.King",
         "description": "Changed \"PhotonContext\" and \"ParticleContext\" to \"IndependentVariable\".",
         "note": ""
      },
      {
         "id": "26",
         "version": "0.99.7",
         "updated": "2005-09-08",
         "changedBy": "T.King",
         "description": "Added \"Description\" and \"TensorOrder\" under \"Parameter\".",
         "note": ""
      },
      {
         "id": "25",
         "version": "0.99.6",
         "updated": "2005-09-07",
         "changedBy": "T.King",
         "description": "Removed \"Provider\" and \"Manufacture\" resources and replaced with ID pointers.",
         "note": ""
      },
      {
         "id": "24",
         "version": "0.99.6",
         "updated": "2005-09-07",
         "changedBy": "T.King",
         "description": "Introduced \"PhotonContext\" and \"ParticleContext\" as replacements for \"IndependentVariable\".",
         "note": ""
      },
      {
         "id": "23",
         "version": "0.99.6",
         "updated": "2005-09-07",
         "changedBy": "T.King",
         "description": "Changed \"UpperLatitude\" to \"HighLatitude\" and \"Lower\" to \"Low\".",
         "note": ""
      },
      {
         "id": "22",
         "version": "0.99.6",
         "updated": "2005-09-07",
         "changedBy": "T.King",
         "description": "Removed \"Ratio\" (Numerator and Denominator).",
         "note": ""
      },
      {
         "id": "21",
         "version": "0.99.6",
         "updated": "2005-09-07",
         "changedBy": "T.King",
         "description": "Added \"Spherical\" and \"Cartesian\" under \"Position\".",
         "note": ""
      },
      {
         "id": "20",
         "version": "0.99.6",
         "updated": "2005-09-07",
         "changedBy": "T.King",
         "description": "Removed \"Body\" and references to it.",
         "note": ""
      },
      {
         "id": "19",
         "version": "0.99.6",
         "updated": "2005-09-07",
         "changedBy": "T.King",
         "description": "Changed \"Surface\" to \"Ground\".",
         "note": ""
      },
      {
         "id": "18",
         "version": "0.99.6",
         "updated": "2005-09-07",
         "changedBy": "T.King",
         "description": "Corrected the inclusion of \"Atmosphere-Ionosphere\" regions into the \"Magnetosphere\".",
         "note": ""
      },
      {
         "id": "17",
         "version": "0.99.5",
         "updated": "2005-08-26",
         "changedBy": "T.King",
         "description": "SPASE version 0.99.5 Released.",
         "note": ""
      },
      {
         "id": "16",
         "version": "0.99.5",
         "updated": "2005-08-26",
         "changedBy": "T.King",
         "description": "Added \"parameter\" loosely based on a model proposed by D.A. Roberts.",
         "note": ""
      },
      {
         "id": "15",
         "version": "0.99.5",
         "updated": "2005-08-26",
         "changedBy": "T.King",
         "description": "Included region descriptions from J. King with additions suggested by K. Reardon.",
         "note": ""
      },
      {
         "id": "14",
         "version": "0.99.5",
         "updated": "2005-08-26",
         "changedBy": "T.King",
         "description": "Added \"Catalog\", \"DisplayData\" to the top list.",
         "note": ""
      },
      {
         "id": "13",
         "version": "0.99.5",
         "updated": "2005-08-26",
         "changedBy": "T.King",
         "description": "Added document elements to product resources.",
         "note": ""
      },
      {
         "id": "12",
         "version": "0.99.5",
         "updated": "2005-08-26",
         "changedBy": "T.King",
         "description": "Changed data types of \"Integer\" to \"Count\" and \"Double\" to \"Numeric\".",
         "note": ""
      },
      {
         "id": "11",
         "version": "0.99.5",
         "updated": "2005-08-26",
         "changedBy": "T.King",
         "description": "Clarified some definitions and corrected typographical errors.",
         "note": "Per J. Thieman and J. Hourcle"
      },
      {
         "id": "10",
         "version": "0.99.4",
         "updated": "2005-08-08",
         "changedBy": "T.King",
         "description": "SPASE version 0.99.4 Released.",
         "note": ""
      },
      {
         "id": "9",
         "version": "0.99.4",
         "updated": "2005-08-08",
         "changedBy": "T.King",
         "description": "Added definitions for new elements introduced in the new taxonomy.",
         "note": ""
      },
      {
         "id": "8",
         "version": "0.99.4",
         "updated": "2005-08-08",
         "changedBy": "T.King",
         "description": "Restructured the taxonomy of elements to match the one suggested by D.A. Roberts.",
         "note": "Per "
      },
      {
         "id": "7",
         "version": "0.99.3",
         "updated": "2005-08-03",
         "changedBy": "T.King",
         "description": "Added definitions supplied by J. Thieman, C. Harvey and T. King; Significant revision of document as suggested by J. Hourcle.",
         "note": ""
      },
      {
         "id": "6",
         "version": "0.99.2",
         "updated": "2005-07-07",
         "changedBy": "T.King",
         "description": "SPASE version 0.99.2 Released.",
         "note": ""
      },
      {
         "id": "5",
         "version": "0.99.2",
         "updated": "2005-07-07",
         "changedBy": "T.King",
         "description": "Corrected \"NumericalData\" entry under \"Product\".",
         "note": ""
      },
      {
         "id": "4",
         "version": "0.99.1",
         "updated": "2005-06-23",
         "changedBy": "T.King",
         "description": "SPASE version 0.99.1 Released.",
         "note": ""
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      {
         "id": "3",
         "version": "0.99.1",
         "updated": "2005-06-23",
         "changedBy": "T.King",
         "description": "Added \"ParticleCorrelator\" and \"SpacecraftPotentialControl\" under \"InstrumentType\".",
         "note": ""
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         "id": "2",
         "version": "0.99.1",
         "updated": "2005-06-23",
         "changedBy": "T.King",
         "description": "Added C. Harvey definition for \"Electron Drift\".",
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         "id": "1",
         "version": "0.99.1",
         "updated": "2005-06-23",
         "changedBy": "T.King",
         "description": "Removed duplicate entries.",
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         "since": "2.6.0",
         "type": "Boundary",
         "definition": "Parameters that define a region in space."
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         "version": "2.7.0",
         "since": "1.1.0",
         "type": "Container",
         "definition": "A \"Container\" of other elements including text fields and containers."
      },
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         "version": "2.7.0",
         "since": "1.1.0",
         "type": "Count",
         "definition": "A whole number."
      },
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         "version": "2.7.0",
         "since": "1.1.0",
         "type": "DateTime",
         "definition": "A value is given in the ISO 8601 recommended primary standard notation: YYYY-MM-DD. where YYYY is the year in the usual Gregorian calendar, MM is the month of the year between 01 (January) and 12 (December), and DD is the day of the month between 01 and 31. It may also have an optional time portion given in the ISO 8601 recommended primary standard notation: HH:MM:SS.sss where HH is the number of complete hours that have passed since midnight (00-24), MM is the number of complete minutes that have passed since the start of the hour (00-59), and SS is the number of complete seconds since the start of the minute (00-60), and sss are milliseconds that have passed since the start of the second (000-999). Time zones are not allowed so all times are in Universal Time. The time portion must follow the date portion with both portions separated by a \"T\". For example, \"2004-07-29\" is July 29, 2004 and \"2004-07-29T12:30:00\" is precisely 12:30 on July 29, 2004."
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      "Duration": {
         "version": "2.7.0",
         "since": "1.1.0",
         "type": "Duration",
         "definition": "A duration of time. The SPASE element \"Cadence\" is an example of a Duration type SPASE element where cadence refers to the delta T or time between consecutive data points in a time series. A SPASE Duration text field is required to be formatted to comply with the ISO 8601 recommended primary standard notation. If a time duration is less that a day the PTHH:MM:SS.sss format applies where PT are tokens to indicate that the time value is a duration, HH is the number of complete hours, MM is the number of complete minutes that have passed since the start of the hour (00-59), and SS is the number of complete seconds since the start of the minute (00-60), and sss are milliseconds that have passed since the start of the second (000-999). If a time duration s longer than or equal to a day, then the ISO 8601 P format applies where for example P1D, P1M, and P1Y represent time cadences of one day, one month, and one year, respectively. Other examples of SPASE Duration-type elements includes DiagnosisTimeStep, DisplayCadence, Exposure, Per, RelativeStopDate, and TimeStep."
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         "version": "2.7.0",
         "since": "1.1.0",
         "type": "Enumeration",
         "definition": "Value is selected from a list of allowed values. The name of list is an additional attribute of the element. Lists may be externally controlled in which case the location of the list is indicated in the textual definition of the element."
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         "since": "1.2.0",
         "type": "Sequence",
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         "definition": "A list of strings where the order of the values is fixed. A space separates each value. For example, \"one two three\"."
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         "since": "1.1.0",
         "type": "Text",
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         "definition": "A description of the standardized measurement increments in which a value is specified. The description is represented as a mathematical phrase. Units should be represented by widely accepted representation. For example, units should conform to the International System of Units (SI) which is maintained by BIPM (Bureau International des Poids et Mesures (see http://www.bipm.fr/ ) when appropriate or use tokens like \"Re\" to represent units of the Radius of the Earth. Within a phrase the circumflex (^) is used to indicate a power, a star (*) is used to indicate multiplication and a slash (/) division. When symbols are not separated by a mathematical operator, multiplication is assumed. Symbols for base units and for commonly derived units can be found by accessing links listed in the Bibliography below for the International System of Units (SI) hosted by the Bureau des Poids et Mesures (BIPM)."
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         "definition": "1P/Halley, is a short-period comet visible from Earth every 75 to 79 years. The comet was visited by the Halley Armada comprised of the ESA Giotto, Japanese Suisei and Sekigake, and Soviet Union Vega 1 and Vega 2 spacecraft in 1986.",
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         "definition": "26P/Grigg-Skjellerup is a periodic comet. It was visited by the ESA Giotto spacecraft in July 1992.",
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         "definition": "A set of 2-D arrays that contain the values of physical parameters, i.e., magnetic field vectors, particle densities, temperatures, etc., at the grid points located in a planar slice of a model volume.",
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         "definition": "A set of 3-D arrays that contain the values of physical parameters, i.e., magnetic field vectors, particle densities, temperatures, etc., at grid points in a model volume.",
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         "definition": "67P/Churyumov-Gerasimenko is a Jupiter-family comet originally from the Kuiper belt. The ESA Rosetta spacecraft rendezvoused with Comet 67P on August 6, 2014 and then orbited the comet from September 10, 2014 to September 30, 2016. Philae, a lander carried by Rosetta, touched down on the comet surface on November 12, 2014.",
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         "definition": "Decrease of radiant energy (relative to the background continuum spectrum).",
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         "definition": "Directory hierarchy templates to store the patterns for the data directory structure, using the URI template specification https://github.com/hapi-server/uri-templates/wiki/Specification. This will enable automated search of files matching a time range. For example, the ACE definitive orbit dataset at NASA SPDF has yearly subdirectories for the data files following the naming pattern $Y. See links for access templates in the Bibliography.",
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         "attributes": "",
         "definition": "Filenaming templates to store the patterns for the data filename structure, using the URI template specification https://github.com/hapi-server/uri-templates/wiki/Specification. This will enable automated search of files matching a time range. For example, the ACE definitive orbit dataset at NASA SPDF has files following the naming pattern \"ac_or_def_$Y$m$d_v$v.cdf\", where $Y is the year, $m is the month, $d is the day, and $v is the version number. See links for access templates in the Bibliography.",
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            "AccessInformationOptional"
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         "attributes": "",
         "definition": "Attributes which specify how to access a resource, its availability, storage format, etc.",
         "usedBy": [
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            "Collection",
            "DisplayData",
            "DisplayOutput",
            "Document",
            "ModelRun",
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         ],
         "subElements": [
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            "Acknowledgement"
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         "allowedValues": []
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         "attributes": "",
         "definition": "Attributes of the resource which pertain to how to accessing the resource, availability and storage format. This resource class is an exact copy of the AccessInformation container. However, as its name suggests, AccessInformationOptional is not a required element.",
         "usedBy": [
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         ],
         "subElements": [
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            "Availability",
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            "AccessURL",
            "Format",
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         "list": "AccessRights",
         "element": "",
         "attributes": "",
         "definition": "Permissions granted or denied by the host of a product to allow other users to access and use the resource.",
         "usedBy": [
            "AccessInformation",
            "AccessInformationOptional",
            "Installer"
         ],
         "allowedValues": [
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         "attributes": "",
         "definition": "Attributes of the method for accessing a resource including a URL, name and description.",
         "usedBy": [
            "AccessInformation",
            "AccessInformationOptional",
            "Registry",
            "Repository",
            "Service"
         ],
         "subElements": [
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            "Language"
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         "element": "",
         "attributes": "",
         "definition": "Alternating electric field component of a wave.",
         "usedBy": [],
         "allowedValues": []
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         "since": "1.0.0",
         "term": "Acknowledgement",
         "type": "Text",
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         "element": "",
         "attributes": "",
         "definition": "The individual, group or organization which should be acknowledged when the data are used in or contributes to a presentation or publication.",
         "usedBy": [
            "AccessInformation",
            "AccessInformationOptional",
            "Installer",
            "ResourceHeader",
            "SpatialCoverage"
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         "allowedValues": []
      },
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         "element": "",
         "attributes": "",
         "definition": "Alternating magnetic field component of a wave.",
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         "allowedValues": []
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         "since": "1.3.0",
         "term": "Active",
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         "element": "",
         "attributes": "",
         "definition": "Exerting an influence or producing a change or effect. An active measurement is one which produces a transmission or excitation as a part of the measurement cycle.",
         "usedBy": [],
         "allowedValues": []
      },
      "ActiveRegion": {
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         "since": "1.3.0",
         "term": "ActiveRegion",
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         "element": "",
         "attributes": "",
         "definition": "A localized, transient volume of the solar atmosphere in which PLAGEs, SUNSPOTS, FACULAe, FLAREs, etc. may be observed.",
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         "allowedValues": []
      },
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         "element": "",
         "attributes": "",
         "definition": "An indication, derived from one or more measurements, of the level of activity of an object or region, such as sunspot number, F10.7 flux, Dst, or the Polar Cap Indices.",
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         "allowedValues": []
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         "since": "1.0.0",
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         "element": "",
         "attributes": "",
         "definition": "Directions for finding some location written on letters or packages that are to be delivered to that location.",
         "usedBy": [
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         "since": "2.3.1",
         "term": "AdiabaticInvariant",
         "type": "Enumeration",
         "list": "AdiabaticInvariant",
         "element": "",
         "attributes": "",
         "definition": "A property of a physical system usually related to periodic phenomena that remains constant under slowly varying conditions.",
         "usedBy": [],
         "allowedValues": [
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            "DriftMotion",
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         "element": "",
         "attributes": "",
         "definition": "A suspension of fine solid or liquid particles in a gas.",
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         "allowedValues": []
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         "attributes": "",
         "definition": "The name of an organization that provides a service or funding for specific projects.",
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         "definition": "A measure of the magnetopause energy flux and an indicator of the solar wind power available for subsequent magnetospheric energization. Defined as: V*B^2*l^2sin(theta/2)^4 where B is the IMF, l is an empirical scaling parameter equal to 7 R<sub>E</sub>, and theta=tan(By/Bz)^-1 the IMF clock angle.",
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         "element": "",
         "attributes": "",
         "definition": "The ratio of reflected radiation from the surface to incident radiation upon it.",
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         "element": "",
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         "definition": "The ratio of the bulk flow speed to the Alfven speed.",
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         "allowedValues": []
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         "element": "",
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         "definition": "Phase velocity of the Alfven wave. In SI units it is the velocity of the magnetic field divided by the square root of the mass density times the permeability of free space (&mu;<sub>0</sub>).",
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         "allowedValues": []
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         "definition": "A positively charged nuclear particle that consists of two protons and two neutrons.",
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         "allowedValues": []
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         "attributes": "",
         "definition": "An alternative or shortened name used to refer to a resource. This includes acronyms, expanded names or a synonym for a resource.",
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         "definition": "The fifth largest moon of Jupiter.",
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         "allowedValues": []
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         "term": "Amplitude",
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         "definition": "The maximum extent of a vibration or oscillation, measured from equilibrium.",
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         "allowedValues": []
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         "definition": "A complementary item which can be subordinate, subsidiary, auxiliary, supplementary to the primary item.",
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         "allowedValues": []
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         "attributes": "",
         "definition": "Direction-dependent property.",
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         "allowedValues": []
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         "term": "Annotation",
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         "attributes": "",
         "definition": "Information which is explanatory or descriptive which is associated with another resource.",
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         "subElements": [
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            "ResourceType",
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            "ClassificationMethod",
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         "definition": "A classification for an annotation.",
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         "definition": "An interval where measurements or observations may be adversely affected.",
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         "element": "",
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         "definition": "A sensor used to measure electric potential.",
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         "allowedValues": []
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         "element": "",
         "attributes": "",
         "definition": "Coupled atmosphere-ocean-sea ice global climate models solve the full equations for mass and energy transfer and radiant exchange.",
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         "allowedValues": []
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         "definition": "An application programming interface (API) is a form of interface that allows applications to access the features or data of an operating system, application, or other service. An API may have a required protocol or set of principles. Some examples of protocols are SOAP, XML-RPC and JSON-RPC. An example of an API with a set of principles is REST.",
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         "definition": "The type of interface for the application.",
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         "element": "",
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         "definition": "An individual who is an expert on a collection of resources and may also be knowledgeable of the phenomenon and related physics represented by the resources. This includes librarians, curators, archive scientists and other experts.",
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      },
      "Area": {
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         "definition": "Integration over the extent of a planar region, or of the surface of a solid.",
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         "allowedValues": []
      },
      "Ariel": {
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         "since": "2.2.5",
         "term": "Ariel",
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         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The fourth largest moon of Uranus.",
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         "allowedValues": []
      },
      "Array": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Array",
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         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A sequence of values corresponding to the elements in a rectilinear, n-dimension matrix. Each value can be referenced by a unique index.",
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         "allowedValues": []
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         "version": "2.7.1",
         "since": "2.0.2",
         "term": "ArrivalDirection",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An angular measure of the direction from which an energetic particle or photon was incident on a detector. The angles may be measured in any coordinate system.",
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         "allowedValues": []
      },
      "ASCII": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "ASCII",
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         "element": "",
         "attributes": "",
         "definition": "A sequence of characters that adheres to American Standard Code for Information Interchange (ASCII) which is a 7-bit character-coding scheme.",
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         "allowedValues": []
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         "term": "Association",
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         "attributes": "",
         "definition": "Attributes of a relationship a resource has with another resource.",
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            "ResourceHeader"
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            "AssociationType",
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         "definition": "The resource identifier for a resource with which this resource is closely associated.",
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         "allowedValues": []
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         "definition": "A characterization of the role or purpose of the resource being described in relationship to the resource with the AssociationID being referenced.",
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      "Asteroid": {
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         "term": "Asteroid",
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         "element": "",
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         "definition": "A small extraterrestrial body consisting mostly of rock and metal that is in orbit around the Sun.",
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         "allowedValues": []
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         "element": "",
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         "definition": "The neutral gases surrounding a body that extends from the surface and is bound to the body by virtue of the gravitational attraction.",
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         "allowedValues": []
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         "attributes": "",
         "definition": "Matter consisting of a nucleus surrounded by electrons which has no net charge.",
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         "definition": "The number of protons in the nucleus of an atom.",
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            "Particle"
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         "definition": "The number of protons in the nucleus of an atom as determined by a detector.",
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         "allowedValues": []
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         "definition": "A natural electrical phenomenon characterized by the appearance of streamers of reddish or greenish light in the sky, especially near the northern or southern magnetic pole. The effect is caused by the interaction of charged particles from the sun with atoms in the upper atmosphere. In northern and southern regions, it is respectively called aurora borealis or Northern Lights and aurora australis or Southern Lights.",
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         "element": "",
         "attributes": "",
         "definition": "The region in the atmospheric where electrically-charged particles bombarding the upper atmosphere of a planet in the presence of a magnetic field produce an optical phenomenon.",
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         "allowedValues": []
      },
      "Author": {
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         "term": "Author",
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         "element": "",
         "attributes": "",
         "definition": "The composer or creator of an artifact. This can include presentations, articles, books, white papers, data products or any similar published work. In SPASE, Author is a Role under Person resource description.",
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         "allowedValues": []
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         "term": "Authors",
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         "element": "",
         "attributes": "",
         "definition": "The individuals or organizations who defined or specified a resource (document, data, images or other types of resources). Separate multiple names with a semicolon. When an author is a person use the \"last, first [, middle]\" name format. Including a middle name is optional (Since 2.6.1).",
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         "version": "2.7.1",
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         "term": "Automatic",
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         "element": "",
         "attributes": "",
         "definition": "Determined by the analysis or assessment performed by a program or server.",
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         "allowedValues": []
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         "version": "2.7.1",
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         "term": "AutoSpectrum",
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         "element": "",
         "attributes": "",
         "definition": "The Fourier transform of the auto correlation function for physical or empirical observations, which describes the general dependence of the time series data values at one instant on the time series data values at another instant.",
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         "allowedValues": []
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      "Availability": {
         "version": "2.7.1",
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         "term": "Availability",
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         "list": "Availability",
         "element": "",
         "attributes": "",
         "definition": "An indication of the method or service which may be used to access the resource.",
         "usedBy": [
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            "AccessInformationOptional",
            "Installer"
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         "allowedValues": [
            "Offline",
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         "term": "Average",
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         "definition": "The statistical mean equal to the sum of a set of values divided by the number of values in the set.",
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         "allowedValues": []
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         "version": "2.7.1",
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         "term": "AverageChargeState",
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         "element": "",
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         "definition": "A measure of the composite deficit (positive) or excess (negative) of electrons with respect to protons.",
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      },
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         "version": "2.7.1",
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         "term": "AVI",
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         "element": "",
         "attributes": "",
         "definition": "Audio Video Interleave (AVI) a digital format for movies that conforms to the Microsoft Windows Resource Interchange File Format (RIFF).",
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         "allowedValues": []
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         "version": "2.7.1",
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         "term": "AwardNumber",
         "type": "Text",
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         "attributes": "",
         "definition": "The identifying information assigned to the financial support (funding) of a project.",
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         "version": "2.7.1",
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         "attributes": "",
         "definition": "Axial symmetry.",
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         "allowedValues": []
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         "attributes": "",
         "definition": "A short character string (approximately 10 characters, but preferably 6 characters, more only if absolutely required for clarity) which can be used to label a y-axis for a plot or to provide a heading for a data listing.",
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         ],
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         "element": "",
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         "definition": "The range of possible azimuthal angles for a group of energy observations. Default units are degrees.",
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         ],
         "subElements": [
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         "term": "AzimuthAngle",
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         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The angle between the projection into the I-J plane of a position or measured vector and the I-axis of the coordinate system. Mathematically defined as arctan(J/I). This term could be also applied to angles measured in different planes, i.e., the IMF clock angle defined as arctan(|By|/Bz).",
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      "BackWall": {
         "version": "2.7.1",
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         "term": "BackWall",
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         "element": "",
         "attributes": "",
         "definition": "Back wall of the model domain by which the plasma flow may exit the model.",
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            "ElementBoundary"
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         "allowedValues": []
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         "version": "2.7.1",
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         "attributes": "",
         "definition": "A common or provider assigned name for a range of values.",
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         "allowedValues": []
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         "version": "2.7.1",
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         "term": "Bandwidth",
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         "element": "",
         "attributes": "",
         "definition": "Integration over the width a frequency band.",
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         "allowedValues": []
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         "version": "2.7.1",
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         "term": "Base64",
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         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A data encoding scheme whereby binary-encoded data is converted to printable ASCII characters. It is defined as a MIME content transfer encoding for use in Internet e-mail. The only characters used are the upper-case and lower-case Roman alphabet characters (A-z), the numerals (0-9), and the \"+\" and \"/\" symbols, with the \"=\" symbol as a special suffix (padding) code.",
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         "element": "",
         "attributes": "",
         "definition": "A grouping of observations according to a band or window of a common attribute.",
         "usedBy": [
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            "EnergyRange",
            "FrequencyRange",
            "MassRange",
            "PitchAngleRange",
            "PolarAngleRange",
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         "term": "Binary",
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         "element": "",
         "attributes": "",
         "definition": "A direct representation of the bits which may be stored in memory on a computer.",
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         "allowedValues": []
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         "version": "2.7.1",
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         "term": "BounceMotion",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The second adiabatic invariant is associated with periodic bounce motion of charged particles trapped between two magnetic mirrors on a magnetic field line. The second invariant, termed J, is defined by using the integral J=m &int; v||*ds where m is the mass of the charged particle, v|| is the particle velocity along the field line, and ds represents elemental arc lengths along the field line. The second adiabatic invariant is conserved as long as changes in the background magnetic field occur at time scales much longer than the bounce time of the charged particles.",
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         "element": "",
         "attributes": "",
         "definition": "Parameters associated to the model boundaries.",
         "usedBy": [
            "ModelDomain"
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         "subElements": [
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         "term": "BowShockCrossing",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A crossing of the boundary between the undisturbed (except for foreshock effects) solar wind and the shocked, decelerated solar wind of the magnetosheath.",
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         "allowedValues": []
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         "version": "2.7.1",
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         "term": "Browse",
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         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A representation of an image which is suitable to reveal most or all of the details of the image.",
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         "allowedValues": []
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         "version": "2.7.1",
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         "term": "BZIP2",
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         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An open standard algorithm by Julian Seward using Burrows-Wheeler block sorting and Huffman coding, see http://www.bzip.org/.",
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         "allowedValues": []
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      "Cadence": {
         "version": "2.7.1",
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         "term": "Cadence",
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         "element": "",
         "attributes": "",
         "definition": "The nominal or most common time interval between the start of successive measurements.",
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            "TemporalDescription"
         ],
         "allowedValues": []
      },
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         "version": "2.7.1",
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         "element": "",
         "attributes": "",
         "definition": "The largest time interval between the start of successive measurements.",
         "usedBy": [
            "Parameter",
            "TemporalDescription"
         ],
         "allowedValues": []
      },
      "CadenceMin": {
         "version": "2.7.1",
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         "term": "CadenceMin",
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         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The smallest time interval between the start of successive measurements.",
         "usedBy": [
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            "TemporalDescription"
         ],
         "allowedValues": []
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         "version": "2.7.1",
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         "term": "CaK",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A spectrum with a wavelength of range centered near 393.5 nm. VSO nickname: Ca-K image with range of 391.9 nm to 395.2 nm.",
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         "allowedValues": []
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         "version": "2.7.1",
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         "term": "Calibrated",
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         "element": "",
         "attributes": "",
         "definition": "Data wherein sensor outputs have been convolved with instrument response function, often irreversibly, to yield data in physical units. Similar to NASA Level 2.",
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         "allowedValues": []
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         "version": "2.7.1",
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         "term": "Callisto",
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         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A second largest moon of Jupiter and the third largest moon in the solar system.",
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         "allowedValues": []
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         "element": "",
         "attributes": "",
         "definition": "A coordinate system which is centered at the Sun and is fixed with respect to the synodic rotation rate. The mean synodic value is about 27.2753 days. The Astronomical Almanac gives a value for Carrington longitude of 349.03 deg at 0000 UT on 1 January 1995.",
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         "attributes": "",
         "definition": "A representation in which a position vector or a measured vector (e.g., field or flow) is specified by its components along the base axes of the coordinate system.",
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         "allowedValues": []
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         "element": "",
         "attributes": "",
         "definition": "A tabular listing of events or observational notes, especially those that have utility in aiding a user in locating data. Catalogs include lists of events, files in a product, and data availability. A Catalog resource is a type of \"data product\" which is a set of data that is uniformly processed and formatted, from one or more instruments, typically spanning the full duration of the observations of the relevant instrument(s). A data product may consist of a collection of granules of successive time spans, but may be a single high-level entity.",
         "usedBy": [
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         ],
         "subElements": [
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            "ResourceHeader",
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         "element": "",
         "attributes": "",
         "definition": "Information which may be important in the avoidance of the misuse of the resource, for instance instrument maladies, corruption or contamination.",
         "usedBy": [
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            "DisplayOutput",
            "ElementBoundary",
            "InputField",
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            "Instrument",
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         "allowedValues": []
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      "CDF": {
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         "term": "CDF",
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         "element": "",
         "attributes": "",
         "definition": "Common Data Format (CDF). A binary storage format developed at Goddard Space Flight Center (GSFC).",
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         "allowedValues": []
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      "CEF": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "CEF",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Cluster Exchange Format (CEF) is a self-documenting ASCII format designed for the exchange of data. There are two versions of CEF which are not totally compatible.",
         "usedBy": [],
         "allowedValues": []
      },
      "CEF1": {
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         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Cluster Exchange Format (CEF), version 1, is a self-documenting ASCII format designed for the exchange of data. The metadata contains information compatible with the ISTP recommendations for CDF.",
         "usedBy": [],
         "allowedValues": []
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      "CEF2": {
         "version": "2.7.1",
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         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Cluster Exchange Format (CEF), version 2, is a self-documenting ASCII format designed for the exchange of data and introduced for Cluster Active Archive. Compared to version 1, the metadata description of vectors and tensors is different.",
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         "allowedValues": []
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         "version": "2.7.1",
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         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The elevation in the center of a region above a surface (such as sea level or land) of a planet or natural satellite.",
         "usedBy": [
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         "allowedValues": []
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      "CenterLatitude": {
         "version": "2.7.1",
         "since": "2.4.2",
         "term": "CenterLatitude",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The latitude in the center of a region in a geographic coordinate system.",
         "usedBy": [
            "SpatialCoverage"
         ],
         "allowedValues": []
      },
      "CenterLongitude": {
         "version": "2.7.1",
         "since": "2.4.2",
         "term": "CenterLongitude",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The longitude in the center of a region in a geographic coordinate system.",
         "usedBy": [
            "SpatialCoverage"
         ],
         "allowedValues": []
      },
      "Central": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "Central",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Central Symmetry.",
         "usedBy": [],
         "allowedValues": []
      },
      "CGM": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "CGM",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Corrected Geomagnetic - A coordinate system from a spatial point with GEO radial distance and geomagnetic latitude and longitude, follow the epoch-appropriate IGRF/DGRF model field vector through to the point where the field line crosses the geomagnetic dipole equatorial plane. Then trace the dipole magnetic field vector Earthward from that point on the equatorial plane, in the same hemisphere as the original point, until the initial radial distance is reached. Designate the dipole latitude and longitude at that point as the CGM latitude and longitude of the original point, see http://nssdc.gsfc.nasa.gov/space/cgm/cgmm_des.html.",
         "usedBy": [],
         "allowedValues": []
      },
      "Channeltron": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Channeltron",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An instrument that detects electrons, ions, and ultraviolet radiation, according to the principle of a secondary emission multiplier. It is typically used in electron spectroscopy and mass spectrometry.",
         "usedBy": [],
         "allowedValues": []
      },
      "Characteristic": {
         "version": "2.7.1",
         "since": "1.2.1",
         "term": "Characteristic",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A quantity which can be easily identified and measured in a given environment.",
         "usedBy": [],
         "allowedValues": []
      },
      "ChargeExchange": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "ChargeExchange",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Chemical process involving a charge transfer from an ion (which becomes neutral) to a neutral (which becomes ionized).",
         "usedBy": [],
         "allowedValues": []
      },
      "ChargeFlux": {
         "version": "2.7.1",
         "since": "2.3.2",
         "term": "ChargeFlux",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The number of ionized particles passing through a unit area per unit time, for instance as measured by a Faraday cup.",
         "usedBy": [],
         "allowedValues": []
      },
      "ChargeState": {
         "version": "2.7.1",
         "since": "2.0.2",
         "term": "ChargeState",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Charge of a fully or partially stripped ion, in units of the charge of a proton. Charge state of a bare proton is equal to one.",
         "usedBy": [],
         "allowedValues": []
      },
      "Checksum": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Checksum",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A computed value that is dependent upon the contents of a digital data object. Primarily used to check whether errors or alterations have occurred during the transmission or storage of a data object.",
         "usedBy": [
            "Source"
         ],
         "subElements": [
            "HashValue",
            "HashFunction"
         ],
         "allowedValues": []
      },
      "ChemicalFormula": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "ChemicalFormula",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Chemical formula representing a population of particle.",
         "usedBy": [
            "InputPopulation",
            "Particle"
         ],
         "allowedValues": []
      },
      "ChildEventOf": {
         "version": "2.7.1",
         "since": "1.3.6",
         "term": "ChildEventOf",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A descendant or caused by another resource.",
         "usedBy": [],
         "allowedValues": []
      },
      "Chromosphere": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Chromosphere",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The region of the solar (or stellar) atmosphere above the temperature minimum and below the Transition Region. The solar chromosphere is approximately 400 km to 2100 km above the photosphere, and characterized by temperatures that range from 4500 K to 28000 K.",
         "usedBy": [],
         "allowedValues": []
      },
      "Circular": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Circular",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Relative to polarization, right-handed circularly polarized light is defined such that the electric field is rotating clockwise as seen by an observer towards whom the wave is moving. Left-handed circularly polarized light is defined such that the electric field is rotating counterclockwise as seen by an observer towards whom the wave is moving. The polarization of magnetohydrodynamic waves is specified with respect to the ambient mean magnetic field. Right-handed polarized waves have a transverse electric field component which turns in a right-handed sense (that of the gyrating electrons) around the magnetic field.",
         "usedBy": [],
         "allowedValues": []
      },
      "ClassificationMethod": {
         "version": "2.7.1",
         "since": "1.3.6",
         "term": "ClassificationMethod",
         "type": "Enumeration",
         "list": "ClassificationMethod",
         "element": "",
         "attributes": "",
         "definition": "The technique used to determine the characteristics of an object.",
         "usedBy": [
            "Annotation"
         ],
         "allowedValues": [
            "Automatic",
            "Inferred",
            "Inspection"
         ]
      },
      "CLI": {
         "version": "2.7.1",
         "since": "2.4.0",
         "term": "CLI",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A command-line interface (CLI) is a form of interface where input to an application is provided as lines of text typically within a shell.",
         "usedBy": [],
         "allowedValues": []
      },
      "CodeLanguage": {
         "version": "2.7.1",
         "since": "2.4.0",
         "term": "CodeLanguage",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A formal language, which comprises a set of instructions that produce various kinds of output.",
         "usedBy": [
            "Model",
            "Software"
         ],
         "allowedValues": []
      },
      "Coherence": {
         "version": "2.7.1",
         "since": "2.3.2",
         "term": "Coherence",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The coherence between two signals x(t) and y(t), C<sub>xy</sub>, is a real-valued function. The square of the coherence is defined by using: Cxy^2=|Gxy(f)|^2/Gxx(f)Gyy(f) where Gxy(f) is equal to the cross-spectral density between two time series denoted as x and y, respectively, and Gxx(f) and Gyy(f) are equal to the auto-spectral densities of the same two time series. Values of Cxy^2 always lie in the range between zero and one, 0<=Cxy^2<=1, in accordance with the Cauchy-Schwarz inequality.",
         "usedBy": [],
         "allowedValues": []
      },
      "CoInvestigator": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "CoInvestigator",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An individual who is a scientific peer and major participant in an investigation.",
         "usedBy": [],
         "allowedValues": []
      },
      "Collection": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "Collection",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An aggregation of resources, which may encompass collections of one resource type as well as those of mixed types. A collection is described as a group. Its parts may also be separately described. An example is an experiment which uses the data from multiple instruments (or sensors). Another example is a research effort that uses a set of display images of the Sun and Energetic particle data from the corresponding times for the images, and FITS files of AIA images, etc. All the resources that are part of the research effort can be described as a Collection. Yet another example is a coordinated set of time series used for determining an index.",
         "usedBy": [
            "Spase"
         ],
         "subElements": [
            "ResourceID",
            "NamingAuthority",
            "ResourceType",
            "ResourceHeader",
            "AccessInformation",
            "Member",
            "Extension"
         ],
         "allowedValues": []
      },
      "ColorBar": {
         "version": "2.7.1",
         "since": "2.2.0",
         "term": "ColorBar",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A spectrum or set of colors used to represent data values.",
         "usedBy": [],
         "allowedValues": []
      },
      "Column": {
         "version": "2.7.1",
         "since": "1.3.4",
         "term": "Column",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A 2-D measure of a quantity. The column is the area over which the quantity is measured.",
         "usedBy": [],
         "allowedValues": []
      },
      "Comet": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Comet",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A relatively small extraterrestrial body consisting of a frozen mass that travels around the Sun in a highly elliptical orbit.",
         "usedBy": [],
         "allowedValues": []
      },
      "Completed": {
         "version": "2.7.1",
         "since": "2.7.1",
         "term": "Completed",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Static dataset (current version).",
         "usedBy": [],
         "allowedValues": []
      },
      "Component": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Component",
         "type": "Enumeration",
         "list": "Component",
         "element": "",
         "attributes": "",
         "definition": "Projection of a vector along one of the base axes of a coordinate system.",
         "usedBy": [],
         "allowedValues": [
            "I",
            "J",
            "K"
         ]
      },
      "Confidence": {
         "version": "2.7.1",
         "since": "2.2.9",
         "term": "Confidence",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An expression of how certain that a quantity is valid or accurate.",
         "usedBy": [],
         "allowedValues": []
      },
      "ConfidenceRating": {
         "version": "2.7.1",
         "since": "1.3.4",
         "term": "ConfidenceRating",
         "type": "Enumeration",
         "list": "ConfidenceRating",
         "element": "",
         "attributes": "",
         "definition": "A classification of the certainty of an assertion.",
         "usedBy": [
            "Annotation"
         ],
         "allowedValues": [
            "Probable",
            "Strong",
            "Unlikely",
            "Weak"
         ]
      },
      "Contact": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Contact",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The person or organization who may be able to provide special assistance or serve as a channel for communication for additional information about a resource.",
         "usedBy": [
            "ResourceHeader"
         ],
         "subElements": [
            "PersonID",
            "Role",
            "StartDate",
            "StopDate",
            "Note"
         ],
         "allowedValues": []
      },
      "Contributor": {
         "version": "2.7.1",
         "since": "1.3.0",
         "term": "Contributor",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An entity responsible for making contributions to the content of the resource.",
         "usedBy": [],
         "allowedValues": []
      },
      "Convention": {
         "version": "2.7.1",
         "since": "2.4.0",
         "term": "Convention",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A set of agreed, stipulated, or generally accepted approaches or methods of adopting a standard or implementing an approach.",
         "usedBy": [],
         "allowedValues": []
      },
      "CoordinateRepresentation": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "CoordinateRepresentation",
         "type": "Enumeration",
         "list": "CoordinateRepresentation",
         "element": "",
         "attributes": "",
         "definition": "The method or form for specifying a given point or vector in a given coordinate system.",
         "usedBy": [
            "CoordinateSystem"
         ],
         "allowedValues": [
            "Cartesian",
            "Cylindrical",
            "Spherical"
         ]
      },
      "CoordinatesLabel": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "CoordinatesLabel",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A string list of the labels of each dimension of the spatial domain.",
         "usedBy": [
            "ModelDomain",
            "SpatialDescription"
         ],
         "allowedValues": []
      },
      "CoordinateSystem": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "CoordinateSystem",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The specification of the orientation of a set of (typically) orthogonal base axes.",
         "usedBy": [
            "InputField",
            "ModelDomain",
            "Parameter",
            "SpatialCoverage",
            "SpatialDescription"
         ],
         "subElements": [
            "CoordinateRepresentation",
            "CoordinateSystemName"
         ],
         "allowedValues": []
      },
      "CoordinateSystemName": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "CoordinateSystemName",
         "type": "Enumeration",
         "list": "CoordinateSystemName",
         "element": "",
         "attributes": "",
         "definition": "Identifies the coordinate system in which the position, direction or observation has been expressed.",
         "usedBy": [
            "CoordinateSystem",
            "Location"
         ],
         "allowedValues": [
            "Carrington",
            "CGM",
            "CSO",
            "DM",
            "ECD",
            "ECEF",
            "ENP",
            "GEI",
            "GEO",
            "GPHIO",
            "GSE",
            "GSEQ",
            "GSM",
            "HAE",
            "HCC",
            "HCI",
            "HCR",
            "HEE",
            "HEEQ",
            "HERTN",
            "HG",
            "HGI",
            "HGRTN",
            "HPC",
            "HPR",
            "HSM",
            "J2000",
            "JSM",
            "JSO",
            "KSM",
            "KSO",
            "LGM",
            "LocalGeographic",
            "LocalGeomagnetic",
            "MAG",
            "MFA",
            "MSO",
            "RTN",
            "SC",
            "SE",
            "SensorCoordinates",
            "SM",
            "SpacecraftOrbitPlane",
            "SR",
            "SR2",
            "SSE",
            "SSE_L",
            "StonyhurstHeliographic",
            "TIIS",
            "VSO",
            "WGS84"
         ]
      },
      "CoPI": {
         "version": "2.7.1",
         "since": "2.3.1",
         "term": "CoPI",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An individual who is peer of a principal investigator and is an administrative and scientific lead for an investigation.",
         "usedBy": [],
         "allowedValues": []
      },
      "Core": {
         "version": "2.7.1",
         "since": "2.2.1",
         "term": "Core",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The central or main part of an object or calculated distribution. For example, the part of a distribution of particles at low energies that is a thermal (Maxwellian) population.",
         "usedBy": [],
         "allowedValues": []
      },
      "Cores": {
         "version": "2.7.1",
         "since": "2.4.0",
         "term": "Cores",
         "type": "Numeric",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An application processor that is part of a CPU.",
         "usedBy": [
            "ExecutionEnvironment"
         ],
         "allowedValues": []
      },
      "Corona": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Corona",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The outermost atmospheric region of the Sun or a star, characterized by ionization temperatures above 10^5 K. The solar corona starts at about 2100 km above the photosphere. There is no generally defined upper limit.",
         "usedBy": [],
         "allowedValues": []
      },
      "CoronalHole": {
         "version": "2.7.1",
         "since": "1.3.0",
         "term": "CoronalHole",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An extended region of the corona, exceptionally low in density and associated with unipolar photospheric regions. A coronal hole can be an open magnetic field in the corona and (perhaps) inner heliosphere which has a faster than average solar wind outflow velocity. A region of lower than quiet coronal ion densities and electron densities in the corona or a coronal region with lower peak electron temperature than that found under quiet coronal conditions.",
         "usedBy": [],
         "allowedValues": []
      },
      "CoronalMassEjection": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "CoronalMassEjection",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A solar event (CME) that involves a burst of plasma ejected into the interplanetary medium. CMEs may be observed remotely relatively near the Sun or in situ in the interplanetary medium. Note that CMEs are often referred to as Interplanetary CMEs (ICMEs).",
         "usedBy": [],
         "allowedValues": []
      },
      "Coronograph": {
         "version": "2.7.1",
         "since": "1.2.1",
         "term": "Coronograph",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An instrument which can image things very close to the Sun by using a disk to block the bright surface of the sun or a star that reveals the faint corona of the Sun or other celestial objects.",
         "usedBy": [],
         "allowedValues": []
      },
      "CountRate": {
         "version": "2.7.1",
         "since": "1.3.1",
         "term": "CountRate",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The number of events per unit time.",
         "usedBy": [],
         "allowedValues": []
      },
      "Counts": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Counts",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The number of detection events occurring in a detector over the detector accumulation time.",
         "usedBy": [],
         "allowedValues": []
      },
      "CrossSection": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "CrossSection",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Cross section of the reaction, when the reaction implies the collision of two particles.",
         "usedBy": [],
         "allowedValues": []
      },
      "CrossSpectrum": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "CrossSpectrum",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The Fourier transform of the cross correlation of two physical or empirical observations.",
         "usedBy": [],
         "allowedValues": []
      },
      "CSO": {
         "version": "2.7.1",
         "since": "2.2.5",
         "term": "CSO",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Corrected Solar Orbital - A coordinate system related to Earth where x-axis is anti-sunward and the y-axis points in the orbital velocity direction.",
         "usedBy": [],
         "allowedValues": []
      },
      "CSV": {
         "version": "2.7.1",
         "since": "2.2.7",
         "term": "CSV",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Comma Separated Value - A data exchange format defined by RFC 4180.",
         "usedBy": [],
         "allowedValues": []
      },
      "CubesDescription": {
         "version": "2.7.1",
         "since": "2.6.0",
         "term": "CubesDescription",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A description of the configuration of the set of 3-D arrays that contain the values of physical parameters, i.e., magnetic field vectors, particle densities, temperatures, etc., at grid points in a model volume.",
         "usedBy": [
            "SpatialDescription"
         ],
         "allowedValues": []
      },
      "Current": {
         "version": "2.7.1",
         "since": "1.2.1",
         "term": "Current",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "It is the scalar quantity giving the net charge (summed over charged particle species) per unit time flowing across a given surface.",
         "usedBy": [],
         "allowedValues": []
      },
      "CurrentDensity": {
         "version": "2.7.1",
         "since": "2.6.0",
         "term": "CurrentDensity",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "It is the vector quantity giving the net charge (summed over charged particle species) per unit cross-sectional area per unit time flowing through a given point. Measurements of current density are often provided in terms of the magnetic perturbations (superposed upon a background magnetic field, if present) associated with the current density.",
         "usedBy": [],
         "allowedValues": []
      },
      "CutsDescription": {
         "version": "2.7.1",
         "since": "2.6.0",
         "term": "CutsDescription",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A description of the configuration of the set of 2-D array points that contain the values of physical parameters, i.e., magnetic field vectors, particle densities, temperatures, etc., at the grid points located in a planar slice of a model volume.",
         "usedBy": [
            "SpatialDescription"
         ],
         "allowedValues": []
      },
      "Cylindrical": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Cylindrical",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A coordinate representation of a position vector or measured vector (field or flow) by its k-component, the magnitude of its projection into the i-j plane, and the azimuthal angle of the i-j plane projection.",
         "usedBy": [],
         "allowedValues": []
      },
      "Data": {
         "version": "2.7.1",
         "since": "1.3.1",
         "term": "Data",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A collection of organized information, usually the results of experience, observation or experiment, or a set of premises. This may consist of numbers, words, or images, particularly as measurements or observations of a set of variables.",
         "usedBy": [],
         "allowedValues": []
      },
      "DataExtent": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "DataExtent",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The area of storage in a file system required to store the contents of a resource. By default, the data extent is expressed in bytes.",
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         "definition": "An individual who generated the resource and is familiar with its provenance.",
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         "definition": "An ancillary parameter that denotes the standard or degree of accuracy, trustworthiness, or usefulness of another parameter.",
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         "term": "Deimos",
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         "element": "",
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         "definition": "The smaller and outermost of the two natural satellites of Mars.",
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         "attributes": "",
         "definition": "Density profile of the particles in a population.",
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         "since": "2.7.1",
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         "attributes": "",
         "definition": "Superseded dataset.",
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         "definition": "An individual who is an administrative or scientific leader for an investigation operating under the supervision of a Principal Investigator.",
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         "definition": "A transformed or altered version of a resource instance.",
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         "definition": "A narrative explanation with detail appropriate for the item it describes. For example, a description of data resource should include discussions of the main quantities in the resource, possible uses and search terms. A description should also include whether any corrections (i.e., geometry, inertial) have been applied to the resource.",
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         "definition": "The developer of a system to imitate a situation or process.",
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         "definition": "The difference between an observed value and the expected value of a quantity.",
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         "definition": "Time at which a diagnosis is performed and quantity saved.",
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         "definition": "A measurement within a narrow range of energy and/or solid angle.",
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         "definition": "The number of items along one axis.",
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         "element": "",
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         "definition": "The fourth largest moon of Saturn.",
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         "definition": "The spatial relation between an object and another object, the orientation of the object or the course along which the object points or moves.",
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         "definition": "A measurement within a narrow range of solid angle.",
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         "element": "",
         "attributes": "",
         "definition": "An enumeration list of angular measures for specifying the direction of an n-dimensional vector within the n-dimensional coordinate system in use or the angular deviation of an n-dimensional vector from an (n-1)-dimensional plane, depending on the application. [Note: DirectionAngle must be used with a sub enumeration term: DirectionAngle.AzimuthAngle; DirectionAngle.ElevationAngle; DirectionAngle.PolarAngle].",
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         "allowedValues": [
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         "definition": "The cosine of the angle between two vectors usually between a vector and one of the basis axes defining a Cartesian coordinate system. Three angles and thus three direction cosines are required to define a vector direction in a 3-D Euclidean space.",
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         "definition": "The time interval between the successive display elements.",
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         "definition": "A graphical representation of data wherein the underlying numeric values are not (readily) accessible for analysis. Examples are line plots and spectrograms. A Display Data resource is a type of \"data product\" which is a set of data that is uniformly processed and formatted, from one or more instruments, typically spanning the full duration of the observations of the relevant instrument(s). A data product may consist of a collection of granules of successive time spans, but may be a single high-level entity.",
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         "definition": "A graphical representation of data wherein the underlying numeric values are not (readily) accessible for analysis. Examples are line plots and spectrograms. A Display Data resource is a type of \"data product\" which is a set of data that is uniformly processed and formatted, from one or more instruments, typically spanning the full duration of the observations of the relevant instrument(s). A data product may consist of a collection of granules of successive time spans, but may be a single high-level entity.",
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         ],
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            "Plasmagram",
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         "definition": "Chemical process by which an ion is neutralized by capturing an electron, and splits in two new neutral species.",
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         "allowedValues": []
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         "term": "Distribution",
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         "element": "",
         "attributes": "",
         "definition": "Velocity distribution of the particles in a population.",
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         "element": "",
         "attributes": "",
         "definition": "Dipole Meridian - A coordinate system centered at the observation point. The z-axis is parallel to the dipole axis of the Earth, positive northward. x-axis is in the plane defined by the z-axis and the line linking the observation point with the center of the Earth. The y-axis is positive eastward, see http://cdpp.cnes.fr/00428.pdf.",
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         "definition": "A set of information designed and presented as an individual entity. A document may contain plain or formatted text, in-line graphics, sound, other multimedia data, or hypermedia references. A Document resource is intended for use on digital objects that have no other identifier (e.g., DOI or ISBN).",
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         "definition": "A characterization of the content, purpose, or style of the document.",
         "usedBy": [
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         ],
         "allowedValues": [
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            "Policy",
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         "attributes": "",
         "definition": "A digital object identifier (DOI) is a unique alphanumeric string assigned by a registration agency (the International DOI Foundation) to identify content and provide a persistent link to its location on the Internet.",
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         "element": "",
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         "definition": "Change in the frequency of a propagating wave due to motion of the source, the observer, the reflector, or the propagation medium.",
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         "element": "",
         "attributes": "",
         "definition": "A map or image depicting the spatial distribution of line-of-sight velocities of the observed object.",
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         "element": "",
         "attributes": "",
         "definition": "A dipole antenna of which the active (sensor) elements are small spheres located at the ends of two wires deployed in the equatorial plane, on opposite sides of a spinning spacecraft.",
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         "definition": "The layer of the ionosphere that exists approximately 50 km to 95 km above the surface of the Earth. One of several layers in the ionosphere.",
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         "element": "",
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         "definition": "The third invariant for charged particle motion in a dipolar magnetic field is associated with drift of its guiding center in the equatorial plane. The conserved quantity, J<sub>2</sub>, is equal to q&phi; where q is the particle charge and &phi; is the magnetic flux enclosed within the particle drift path.",
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         "attributes": "",
         "definition": "Duration of the model run.",
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            "ModelTime"
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         "element": "",
         "attributes": "",
         "definition": "Free microscopic particles of solid material.",
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         "allowedValues": []
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         "element": "",
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         "definition": "An instrument which determines the mass and speed of ambient dust particles.",
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         "element": "",
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         "definition": "Dynamic pressure is a measure of the kinetic energy per unit volume of a fluid. For instance, the solar wind dynamic pressure or ram pressure for a purely proton plasma is equal to m<sub>p</sub> n V<sup>2</sup> where m<sub>p</sub> is the proton mass, n is the proton number density, and V is the solar wind speed.",
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         "definition": "The third planet from the Sun in our solar system.",
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         "allowedValues": [
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            "Magnetosphere.RadiationBelt",
            "Magnetosphere.RingCurrent",
            "Moon",
            "NearSurface",
            "NearSurface.Atmosphere",
            "NearSurface.AuroralRegion",
            "NearSurface.EquatorialRegion",
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            "NearSurface.Ionosphere.ERegion",
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            "NearSurface.Mesosphere",
            "NearSurface.MidLatitudeRegion",
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            "NearSurface.PolarCap",
            "NearSurface.SouthAtlanticAnomalyRegion",
            "NearSurface.Stratosphere",
            "NearSurface.SubAuroralRegion",
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         "definition": "The longitude furthest to the east in a geographic coordinate system.",
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         "element": "",
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         "definition": "Eccentric Dipole (ECD) coordinate system that aligns with a dipole whose origin and orientation may be different from the physical center and spin axis of the containing body. The IGRF-12 coefficients for 2015 are used to determine the origin for the Earth. The 2015 positions are North dip pole: latitude: 86.29, longitude -160.06. South dip pole latitude: -64.28, longitude: 136.59, North geometric pole latitude: 80.37, longitude: -72.63, South geomagnetic pole latitude: -80.37, longitude: 107.37. ECD is defined in doi:10.1186/s40623-015-0228-9.",
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         "element": "",
         "attributes": "",
         "definition": "The Earth-Centered, Earth-Fixed (ECEF) coordinate system has point (0,0,0) defined as the center of mass of the Earth. Its axes are aligned with the International Reference Pole (IRP) and International Reference Meridian (IRM). The x-axis intersects the sphere of the Earth at 0 deg latitude (Equator) and 0 deg longitude (Greenwich). The z-axis points north. The y-axis completes the right-handed coordinate system.",
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         "element": "",
         "attributes": "",
         "definition": "A wave in the corona of the Sun that generates shock waves in the solar chromosphere (Moreton Waves). EIT Waves are produced by large solar flare and expand outward at about 1,000 km/s. It usually appears as a slowly moving diffuse arc of brightening in H-alpha, and may travel for several hundred thousand km.",
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         "element": "",
         "attributes": "",
         "definition": "The physical attribute that exerts an electrical force.",
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         "allowedValues": []
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      "ElectricField": {
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         "element": "",
         "attributes": "",
         "definition": "A region of space around a charged particle, or between two voltages within which a force is exerted on charged objects in its vicinity. An electric field is the electric force per unit charge.",
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         "allowedValues": []
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         "element": "",
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         "definition": "The study of the motions of ionized particles or molecules and their interactions with electric fields and the surrounding fluid [https://en.wikipedia.org/wiki/Electrohydrodynamics].",
         "usedBy": [],
         "allowedValues": []
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         "term": "Electromagnetic",
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         "element": "",
         "attributes": "",
         "definition": "Electric and magnetic field variations in time and space that propagate through a medium or a vacuum. The wave propagation direction, electric field vector, and magnetic field vector form an orthogonal triad. Waves in this category are detected by having their field quantities measured.",
         "usedBy": [],
         "allowedValues": []
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         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An elementary particle that has a negative charge equal to about 1.60218*10^-19 C and a rest mass equal to about 9.10938*10^-31 kg.",
         "usedBy": [],
         "allowedValues": []
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         "term": "ElectronDriftInstrument",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An active experiment to measure the electron drift velocity based on sensing the displacement of a weak beam of electrons after one gyration in the ambient magnetic field.",
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         "allowedValues": []
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         "version": "2.7.1",
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         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Chemical process by which a neutral is ionized thanks to the energy from the impact of an electron.",
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         "allowedValues": []
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         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Collective longitudinal electric-field and plasma oscillations trapped within a body of plasma.",
         "usedBy": [],
         "allowedValues": []
      },
      "ElectrostaticAnalyser": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "ElectrostaticAnalyser",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An instrument which uses charged plates to analyze the mass, charge and kinetic energies of charged particles which enter the instrument.",
         "usedBy": [],
         "allowedValues": []
      },
      "Element": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Element",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A component or individual unit of a multiple value quantity such as an array or vector.",
         "usedBy": [
            "Structure"
         ],
         "subElements": [
            "Name",
            "Qualifier",
            "Index",
            "ParameterKey",
            "Units",
            "UnitsConversion",
            "ValidMin",
            "ValidMax",
            "FillValue",
            "RenderingHints"
         ],
         "allowedValues": []
      },
      "ElementBoundary": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "ElementBoundary",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Parameters associated to the model boundaries.",
         "usedBy": [],
         "subElements": [
            "Caveats",
            "FrontWall",
            "BackWall",
            "SideWall",
            "Obstacle"
         ],
         "allowedValues": []
      },
      "Elevation": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Elevation",
         "type": "Numeric",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The distance in meters above (positive) or below (negative) the zero-elevation defined by the World Geodetic System reference frame (WGS84).",
         "usedBy": [
            "Location"
         ],
         "allowedValues": []
      },
      "ElevationAngle": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "ElevationAngle",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The angle between the position or measured vector and the I-J plane of the coordinate system. Mathematically defined as arctan(K/sqrt(I^2+J^2)).",
         "usedBy": [],
         "allowedValues": []
      },
      "Email": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Email",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The electronic address at which the individual may be contacted expressed in the form \"local-part@domain\".",
         "usedBy": [
            "Person"
         ],
         "allowedValues": []
      },
      "Emissivity": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Emissivity",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The energy emitted spontaneously per unit bandwidth (typically frequency) per unit time per unit mass of source. Emissivity is usually integrated over all directions/solid angles.",
         "usedBy": [],
         "allowedValues": []
      },
      "Empirical": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Empirical",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Information obtained through observation, experiment, or experience.",
         "usedBy": [],
         "allowedValues": []
      },
      "Enceladus": {
         "version": "2.7.1",
         "since": "2.2.5",
         "term": "Enceladus",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The sixth largest moon of Saturn. It is currently endogenously active. The smallest known body in the Solar System that is geologically active today.",
         "usedBy": [],
         "allowedValues": []
      },
      "EncodedParameter": {
         "version": "2.7.1",
         "since": "2.3.2",
         "term": "EncodedParameter",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A variable that uses successive bits to encode, this is bitwise encode, a set of conditions by using a composited multi-bit numeric value. A common example is a bitwise encoded flag that denotes whether various possible errors that may affect a particular measurement. For example, a bit value equal to zero may indicate the absence of a particular error condition while a value equal to one would indicate the possibility that the associated datum should be ignored or used with caution due to the same error categorization.",
         "usedBy": [],
         "allowedValues": []
      },
      "Encoding": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Encoding",
         "type": "Enumeration",
         "list": "Encoding",
         "element": "",
         "attributes": "",
         "definition": "File encoding format.",
         "usedBy": [
            "AccessInformation",
            "AccessInformationOptional"
         ],
         "allowedValues": [
            "ASCII",
            "Base64",
            "BZIP2",
            "GZIP",
            "None",
            "S3_BUCKET",
            "TAR",
            "Unicode",
            "ZIP"
         ]
      },
      "EnergeticParticleInstrument": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "EnergeticParticleInstrument",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An instrument that measures fluxes of charged particles as a function of time, direction of motion, mass, charge and/or species.",
         "usedBy": [],
         "allowedValues": []
      },
      "EnergeticParticles": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "EnergeticParticles",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Pieces of matter that are moving very fast. Energetic particles include protons, electrons, neutrons, neutrinos, the nuclei of atoms, and other sub-atomic particles.",
         "usedBy": [],
         "allowedValues": []
      },
      "EnergeticSolarParticleEvent": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "EnergeticSolarParticleEvent",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An enhancement of interplanetary fluxes of energetic ions accelerated by interplanetary shocks and/or solar flares.",
         "usedBy": [],
         "allowedValues": []
      },
      "Energy": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Energy",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The capacity for doing work as measured by the capability of doing work (potential energy) or the conversion of this capability to motion (kinetic energy).",
         "usedBy": [],
         "allowedValues": []
      },
      "EnergyDensity": {
         "version": "2.7.1",
         "since": "1.2.1",
         "term": "EnergyDensity",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The amount of energy per unit volume.",
         "usedBy": [],
         "allowedValues": []
      },
      "EnergyFlux": {
         "version": "2.7.1",
         "since": "1.2.1",
         "term": "EnergyFlux",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The amount of energy passing through a unit area in a unit time.",
         "usedBy": [],
         "allowedValues": []
      },
      "EnergyPerCharge": {
         "version": "2.7.1",
         "since": "2.3.2",
         "term": "EnergyPerCharge",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The kinetic energy, E, per unit net charge, q, that is E/q, for an electron or an ionized atom, molecule, or dust particle.",
         "usedBy": [],
         "allowedValues": []
      },
      "EnergyRange": {
         "version": "2.7.1",
         "since": "1.1.0",
         "term": "EnergyRange",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The minimum and maximum energy values of the particles represented by a given physical parameter description.",
         "usedBy": [
            "Particle",
            "Wave"
         ],
         "subElements": [
            "Low",
            "High",
            "Units",
            "Bin"
         ],
         "allowedValues": []
      },
      "ENP": {
         "version": "2.7.1",
         "since": "2.2.3",
         "term": "ENP",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "ENP (also called PEN) - The P-axis points northward, perpendicular to orbital plane. For an orbit with zero inclination, the P-axis is parallel to spin axis of the Earth. The E-axis is perpendicular to the P and N directions and points earthward. The N-axis is perpendicular to P and E and is positive eastward.",
         "usedBy": [],
         "allowedValues": []
      },
      "Entropy": {
         "version": "2.7.1",
         "since": "2.2.9",
         "term": "Entropy",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A function of thermodynamic quantity, such as temperature, pressure, or composition, that is a measure of the energy that is not available for work during a thermodynamic process. It is often interpreted as the degree of disorder or randomness in the system.",
         "usedBy": [],
         "allowedValues": []
      },
      "Ephemeris": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Ephemeris",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The spatial coordinates of a body as a function of time. When used as an Instrument Type it represents the process or methods used to generate spatial coordinates.",
         "usedBy": [],
         "allowedValues": []
      },
      "EPNTAP": {
         "version": "2.7.1",
         "since": "2.4.1",
         "term": "EPNTAP",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Europlanet (EPN) Table Access Protocol (TAP) is a framework, which is using TAP with the EPNcore metadata dictionary. The EPNcore metadata dictionary defines the core components that are necessary to perform data discovery in the Solar System related science fields, see https://github.com/ivoa-std/EPNTAP.",
         "usedBy": [],
         "allowedValues": []
      },
      "EquatorialRegion": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "EquatorialRegion",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A region centered on the equator and limited in latitude by approximately 23 deg north and south of the equator.",
         "usedBy": [],
         "allowedValues": []
      },
      "EquivalentWidth": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "EquivalentWidth",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The spectral width of a total absorption line having the amount of absorbed radiant energy being equivalent to that in an observed absorption line.",
         "usedBy": [],
         "allowedValues": []
      },
      "ERegion": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "ERegion",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A layer of ionized gas occurring at 90 km to 150 km above the ground. One of several layers in the ionosphere. Also called the Kennelly-Heaviside layer.",
         "usedBy": [],
         "allowedValues": []
      },
      "Europa": {
         "version": "2.7.1",
         "since": "2.2.5",
         "term": "Europa",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The sixth closest round moon of Jupiter.",
         "usedBy": [],
         "allowedValues": []
      },
      "Event": {
         "version": "2.7.1",
         "since": "1.3.4",
         "term": "Event",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An action or observation which occurs at a point in time.",
         "usedBy": [],
         "allowedValues": []
      },
      "Excel": {
         "version": "2.7.1",
         "since": "2.2.0",
         "term": "Excel",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A Microsoft spreadsheet format used to hold a variety of data in tables which can include calculations.",
         "usedBy": [],
         "allowedValues": []
      },
      "ExecutionEnvironment": {
         "version": "2.7.1",
         "since": "2.4.0",
         "term": "ExecutionEnvironment",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An execution platform for software which includes an operating system and necessary hardware.",
         "usedBy": [
            "Software"
         ],
         "subElements": [
            "OperatingSystem",
            "Installer",
            "Cores",
            "Storage",
            "Memory"
         ],
         "allowedValues": []
      },
      "Experiment": {
         "version": "2.7.1",
         "since": "2.3.2",
         "term": "Experiment",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A collection of components which are designed to make coordinated observations of a phenomenon or object. Projects and missions may refer to an \"experiment\" by other names such as a \"suite\".",
         "usedBy": [],
         "allowedValues": []
      },
      "ExpirationDate": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "ExpirationDate",
         "type": "DateTime",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The date and time when a resource is no longer available. If the Expiration Date is specified then it indicates that resource should not be made available after that time. However, this is only advisory and in practice a resource description should be unpublished to eliminate access to a resource.",
         "usedBy": [
            "Granule",
            "ResourceHeader"
         ],
         "allowedValues": []
      },
      "Exposure": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Exposure",
         "type": "Duration",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The time interval over which an individual measurement is taken.",
         "usedBy": [
            "TemporalDescription"
         ],
         "allowedValues": []
      },
      "ExposureMax": {
         "version": "2.7.1",
         "since": "2.2.9",
         "term": "ExposureMax",
         "type": "Duration",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The largest interval over which an individual measurement is taken.",
         "usedBy": [
            "TemporalDescription"
         ],
         "allowedValues": []
      },
      "ExposureMin": {
         "version": "2.7.1",
         "since": "2.2.9",
         "term": "ExposureMin",
         "type": "Duration",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The smallest time interval over which an individual measurement is taken.",
         "usedBy": [
            "TemporalDescription"
         ],
         "allowedValues": []
      },
      "Extension": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Extension",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A container of other metadata which is not part of the SPASE data model. The contents of this element are defined by individual usage. The organization and content are constrained by the implementation. For example, in an XML representation of the SPASE metadata the content must conform to the XML specifications.",
         "usedBy": [
            "Annotation",
            "Catalog",
            "Collection",
            "DisplayData",
            "DisplayOutput",
            "Instrument",
            "ModelRun",
            "NumericalData",
            "NumericalOutput",
            "Observatory",
            "Person",
            "Registry",
            "Repository",
            "Service"
         ],
         "allowedValues": []
      },
      "ExtremeUltraviolet": {
         "version": "2.7.1",
         "since": "1.2.1",
         "term": "ExtremeUltraviolet",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A spectrum with a wavelength range of 10 nm to 125 nm. VSO nickname: EUV image with a range of 10 nm to 125 nm.",
         "usedBy": [],
         "allowedValues": []
      },
      "FaradayCup": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "FaradayCup",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An instrument consisting of an electrode from which electrical current is measured while a charged particle beam (electrons or ions) impinges on it. Used to determine energy spectrum and sometimes ion composition of the impinging particles.",
         "usedBy": [],
         "allowedValues": []
      },
      "FarUltraviolet": {
         "version": "2.7.1",
         "since": "1.3.5",
         "term": "FarUltraviolet",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A spectrum with a wavelength range of 122 nm to 200 nm. VSO nickname: FUV image with a range of 122 nm to 200 nm.",
         "usedBy": [],
         "allowedValues": []
      },
      "FaxNumber": {
         "version": "2.7.1",
         "since": "1.2.1",
         "term": "FaxNumber",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The symbols and numerals required to send a facsimile (FAX) to an individual by telephone. The string may contain punctuation marks such as dash \"-\" or dot \".\" to separate fields within the string.",
         "usedBy": [
            "Person"
         ],
         "allowedValues": []
      },
      "Feature": {
         "version": "2.7.1",
         "since": "1.3.4",
         "term": "Feature",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A prominent or distinctive characteristic that occurs at a location or persists over a period of time.",
         "usedBy": [],
         "allowedValues": []
      },
      "Field": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Field",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The space around a radiating body within which its electromagnetic attributes can exert force on another similar body that is not in direct contact.",
         "usedBy": [
            "Parameter"
         ],
         "subElements": [
            "Qualifier",
            "FieldQuantity",
            "FrequencyRange"
         ],
         "allowedValues": []
      },
      "FieldAligned": {
         "version": "2.7.1",
         "since": "1.3.6",
         "term": "FieldAligned",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The component of a quantity which is oriented in the same direction of a field.",
         "usedBy": [],
         "allowedValues": []
      },
      "FieldBoundary": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "FieldBoundary",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Parameters associated with the field boundaries of the model.",
         "usedBy": [
            "BoundaryConditions"
         ],
         "allowedValues": []
      },
      "FieldDimension": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "FieldDimension",
         "type": "Count",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Number of field dimensions in the model domain.",
         "usedBy": [
            "ModelDomain"
         ],
         "allowedValues": []
      },
      "FieldModel": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "FieldModel",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Field model imposed in the model run.",
         "usedBy": [
            "InputField"
         ],
         "allowedValues": []
      },
      "FieldQuantity": {
         "version": "2.7.1",
         "since": "1.1.0",
         "term": "FieldQuantity",
         "type": "Enumeration",
         "list": "FieldQuantity",
         "element": "",
         "attributes": "",
         "definition": "The physical attribute of the field.",
         "usedBy": [
            "Field",
            "InputField"
         ],
         "allowedValues": [
            "Current",
            "CurrentDensity",
            "Electric",
            "Electromagnetic",
            "Gyrofrequency",
            "Magnetic",
            "PlasmaFrequency",
            "Potential",
            "PoyntingFlux"
         ]
      },
      "FieldValue": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "FieldValue",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A string list of the values of the input parameter.",
         "usedBy": [
            "InputField"
         ],
         "allowedValues": []
      },
      "File": {
         "version": "2.7.1",
         "since": "2.3.0",
         "term": "File",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Access to a file containing the data.",
         "usedBy": [],
         "allowedValues": []
      },
      "FillValue": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "FillValue",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A value that indicates that a quantity is undefined.",
         "usedBy": [
            "Element",
            "Parameter"
         ],
         "allowedValues": []
      },
      "Film": {
         "version": "2.7.1",
         "since": "2.2.0",
         "term": "Film",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An image recording medium on which usually a negative analog image is registered. A positive analog image can be recovered or reproduced from film, which is usually made of flexible materials for ease of storage and transportation.",
         "usedBy": [],
         "allowedValues": []
      },
      "Fit": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Fit",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Values that make a model agree with the data.",
         "usedBy": [],
         "allowedValues": []
      },
      "FITS": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "FITS",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Flexible Image Transport System (FITS) is a digital format primarily designed to store scientific data sets consisting of multi-dimensional arrays (1-D spectra, 2-D images or 3-D data cubes) and 2-D tables containing rows and columns of data.",
         "usedBy": [],
         "allowedValues": []
      },
      "FlowSpeed": {
         "version": "2.7.1",
         "since": "1.2.1",
         "term": "FlowSpeed",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The magnitude of the flow velocity.",
         "usedBy": [],
         "allowedValues": []
      },
      "FlowVelocity": {
         "version": "2.7.1",
         "since": "1.3.1",
         "term": "FlowVelocity",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The mean velocity of all particles in the flow, also referred to as bulk velocity or average flow velocity.",
         "usedBy": [],
         "allowedValues": []
      },
      "Fluence": {
         "version": "2.7.1",
         "since": "2.2.0",
         "term": "Fluence",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The time integral of a flux. A fluence is a not a measurement of flux per unit time.",
         "usedBy": [],
         "allowedValues": []
      },
      "FluxFeedback": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "FluxFeedback",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A search coil whose bandwidth and signal/noise ratio are increased by the application of negative feedback at the sensor (flux) level by driving a collocated coil with a signal from the preamplifier.",
         "usedBy": [],
         "allowedValues": []
      },
      "ForbushDecrease": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "ForbushDecrease",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A rapid decrease in the observed galactic cosmic ray intensity following the passage of an outwardly convecting interplanetary magnetic field disturbance, such as those associated with large CMEs, that sweep some galactic cosmic rays away from Earth.",
         "usedBy": [],
         "allowedValues": []
      },
      "Format": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Format",
         "type": "Enumeration",
         "list": "Format",
         "element": "",
         "attributes": "",
         "definition": "The file format specification. The value is selected from a list of accepted names for known, well documented formats.",
         "usedBy": [
            "AccessInformation",
            "AccessInformationOptional"
         ],
         "allowedValues": [
            "AVI",
            "Binary",
            "CDF",
            "CEF",
            "CEF1",
            "CEF2",
            "CSV",
            "Excel",
            "FITS",
            "GIF",
            "Hardcopy",
            "Hardcopy.Film",
            "Hardcopy.Microfiche",
            "Hardcopy.Microfilm",
            "Hardcopy.Photograph",
            "Hardcopy.PhotographicPlate",
            "Hardcopy.Print",
            "HDF",
            "HDF4",
            "HDF5",
            "HTML",
            "IDFS",
            "IDL",
            "JPEG",
            "JSON",
            "MATLAB_4",
            "MATLAB_6",
            "MATLAB_7",
            "MPEG",
            "NCAR",
            "NetCDF",
            "PDF",
            "PDS3",
            "PDS4",
            "PNG",
            "Postscript",
            "QuickTime",
            "RINEX2",
            "RINEX3",
            "Text",
            "Text.ASCII",
            "Text.Unicode",
            "TFCat",
            "TIFF",
            "UDF",
            "VOTable",
            "XML"
         ]
      },
      "FormerPI": {
         "version": "2.7.1",
         "since": "2.0.3",
         "term": "FormerPI",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An individual who had served as the administrative and scientific lead for an investigation, but no longer assumes that role.",
         "usedBy": [],
         "allowedValues": []
      },
      "FourierTransformSpectrograph": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "FourierTransformSpectrograph",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An instrument that determines the spectra of a radiative source, using time domain measurements and a Fourier transform.",
         "usedBy": [],
         "allowedValues": []
      },
      "FRegion": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "FRegion",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A layer that contains ionized gases at a height of around 150-800 km above sea level, placing it in the thermosphere. the F region has the highest concentration of free electrons and ions anywhere in the atmosphere. It may be thought of as comprising two layers, the F1 layer and F2 layer. One of several layers in the ionosphere. Also known as the Appleton layer.",
         "usedBy": [],
         "allowedValues": []
      },
      "Frequency": {
         "version": "2.7.1",
         "since": "1.3.5",
         "term": "Frequency",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The number of occurrences of a repeating event per unit time.",
         "usedBy": [],
         "allowedValues": []
      },
      "FrequencyRange": {
         "version": "2.7.1",
         "since": "1.1.0",
         "term": "FrequencyRange",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The range of possible values for the observed frequency.",
         "usedBy": [
            "Field",
            "Wave"
         ],
         "subElements": [
            "SpectralRange",
            "Low",
            "High",
            "Units",
            "Bin"
         ],
         "allowedValues": []
      },
      "FrequencyToGyrofrequencyRatio": {
         "version": "2.7.1",
         "since": "1.3.6",
         "term": "FrequencyToGyrofrequencyRatio",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The ratio of the characteristic frequency of a medium to gyrofrequency of a particle.",
         "usedBy": [],
         "allowedValues": []
      },
      "FrontWall": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "FrontWall",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Front wall of the model domain by which the plasma flow may be injected.",
         "usedBy": [
            "ElementBoundary"
         ],
         "allowedValues": []
      },
      "Funding": {
         "version": "2.7.1",
         "since": "2.3.0",
         "term": "Funding",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The source of financial support (funding) for the resource.",
         "usedBy": [
            "ResourceHeader"
         ],
         "subElements": [
            "Agency",
            "Project",
            "AwardNumber"
         ],
         "allowedValues": []
      },
      "GammaRays": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "GammaRays",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Photons with a wavelength range: 0.00001 nm to 0.001 nm.",
         "usedBy": [],
         "allowedValues": []
      },
      "Ganymede": {
         "version": "2.7.1",
         "since": "2.2.5",
         "term": "Ganymede",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The biggest moon of Jupiter and in the solar system.",
         "usedBy": [],
         "allowedValues": []
      },
      "GCM": {
         "version": "2.7.1",
         "since": "2.6.1",
         "term": "GCM",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A Global Circulation Model (GCM) is a type of climate model, which employs mathematical equations to simulate the motion of a planetary atmosphere or ocean.",
         "usedBy": [],
         "allowedValues": []
      },
      "GEI": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "GEI",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "GEI Geocentric Equatorial Inertial - A coordinate system where the z-axis is along spin axis of the Earth, positive northward. The x-axis points towards the first point of Aries (from the Earth towards the Sun at the vernal equinox), see Russell, 1971. When the x-axis is the direction of the mean vernal equinox of J2000, the coordinate system is also called GCI. Then the z-axis is also defined as being normal to the mean Earth equator of J2000.",
         "usedBy": [],
         "allowedValues": []
      },
      "GeigerMuellerTube": {
         "version": "2.7.1",
         "since": "1.2.1",
         "term": "GeigerMuellerTube",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An instrument which measures density of ionizing radiation based on interactions with a gas.",
         "usedBy": [],
         "allowedValues": []
      },
      "GeneralContact": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "GeneralContact",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An individual who can provide information on a range of subjects or who can direct you to a domain expert.",
         "usedBy": [],
         "allowedValues": []
      },
      "GEO": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "GEO",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Geographic - geocentric corotating - A coordinate system where the z-axis is along spin axis of the Earth, positive northward. The x-axis lies in Greenwich meridian, positive towards Greenwich, see Russell, 1971.",
         "usedBy": [],
         "allowedValues": []
      },
      "GeomagneticStorm": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "GeomagneticStorm",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A magnetospheric disturbance typically defined by variations in the horizontal component of the surface magnetic field on the Earth. The variation typically starts with a field enhancement associated with a solar wind pressure pulse and continues with a field depression associated with an enhancement of the diamagnetic magnetospheric ring current.",
         "usedBy": [],
         "allowedValues": []
      },
      "GeometricFactor": {
         "version": "2.7.1",
         "since": "2.3.1",
         "term": "GeometricFactor",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A measure of the gathering power of a particle detector. The geometric factor can be used to correct particle measurements by accounting for the fact that only a fraction of the source particles is able to gain entry through the aperture of a detector. For an isotopic source distribution, the geometric factor corresponds to the solid angle subtended by the aperture. In practice, determination of the geometric factor requires numerical modeling and depends on detector design and the characteristics of the source.",
         "usedBy": [],
         "allowedValues": []
      },
      "GIF": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "GIF",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Graphic Interchange Format (GIF) first introduced in 1987 by CompuServe. GIF uses LZW compression and images are limited to 256 colors.",
         "usedBy": [],
         "allowedValues": []
      },
      "Git": {
         "version": "2.7.1",
         "since": "2.4.1",
         "term": "Git",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Git is a version control system for tracking changes in any set of files. It is known for its speed, data integrity, and support for distributed, non-linear workflows.",
         "usedBy": [],
         "allowedValues": []
      },
      "GPHIO": {
         "version": "2.7.1",
         "since": "2.2.5",
         "term": "GPHIO",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Kronian Solar Orbital - A coordinate system related to Saturn where the x-axis is anti-sunward and the y-axis points in the orbital velocity direction.",
         "usedBy": [],
         "allowedValues": []
      },
      "Granule": {
         "version": "2.7.1",
         "since": "1.1.0",
         "term": "Granule",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An accessible portion of another resource. A Granule may be composed of one or more physical pieces (files) which are considered inseparable. For example, a data storage format that maintains metadata and binary data in separate, but tightly coupled files. Granules should not be used to group files that have simple relationships or which are associated through a parent resource. For example, each file containing a time interval data for a Numerical Data resource would each be considered a Granule. The ParentID of a Granule resource must be a NumericalData resource. The attributes of a Granule supersede the corresponding attributes in the NumericalData resource.",
         "usedBy": [
            "Spase"
         ],
         "subElements": [
            "ResourceID",
            "NamingAuthority",
            "ResourceType",
            "ReleaseDate",
            "ExpirationDate",
            "ParentID",
            "PriorID",
            "StartDate",
            "StopDate",
            "SpatialCoverage",
            "Source",
            "RegionBegin",
            "RegionEnd"
         ],
         "allowedValues": []
      },
      "GridCellSize": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "GridCellSize",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A string list of the cell sizes in each dimension.",
         "usedBy": [
            "ModelDomain"
         ],
         "allowedValues": []
      },
      "GridStructure": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "GridStructure",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Structure of the model grid.",
         "usedBy": [
            "ModelDomain"
         ],
         "allowedValues": []
      },
      "Group": {
         "version": "2.7.1",
         "since": "1.3.6",
         "term": "Group",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An assemblage of values that a certain relation or common characteristic.",
         "usedBy": [],
         "allowedValues": []
      },
      "GSE": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "GSE",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Geocentric Solar Ecliptic - A coordinate system where the x-axis is from Earth to Sun. The z-axis is normal to the ecliptic, positive northward, see Russell, 1971.",
         "usedBy": [],
         "allowedValues": []
      },
      "GSEQ": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "GSEQ",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Geocentric Solar Equatorial - A coordinate system where the x-axis is from Earth to Sun. The y-axis is parallel to solar equatorial plane. The z-axis is positive northward, see Russell, 1971.",
         "usedBy": [],
         "allowedValues": []
      },
      "GSM": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "GSM",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Geocentric Solar Magnetospheric - A coordinate system where the x-axis is from Earth to Sun, z-axis is northward in a plane containing the x-axis and the geomagnetic dipole axis, see Russell, 1971.",
         "usedBy": [],
         "allowedValues": []
      },
      "GUI": {
         "version": "2.7.1",
         "since": "2.4.0",
         "term": "GUI",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A graphical user interface (GUI) is a form of user interface that allows users to interact with an application through graphical icons, forms and other elements with both a keyboard and a pointing device.",
         "usedBy": [],
         "allowedValues": []
      },
      "Gyrofrequency": {
         "version": "2.7.1",
         "since": "1.2.1",
         "term": "Gyrofrequency",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The number of gyrations around a magnetic guiding center (field line) a charged particle makes per unit time due to the Lorentz force.",
         "usedBy": [],
         "allowedValues": []
      },
      "GZIP": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "GZIP",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An open standard algorithm distributed by GHU based on LZ77 and Huffman coding, see http://www.gnu.org/software/gzip/gzip.html or http://www.gzip.org/.",
         "usedBy": [],
         "allowedValues": []
      },
      "HAE": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "HAE",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Heliocentric Aries Ecliptic - A coordinate system where the z-axis is normal to the ecliptic plane, positive northward. The x-axis is positive towards the first point of Aries (from Earth to Sun at vernal equinox). Same as SE below, see Hapgood, 1992.",
         "usedBy": [],
         "allowedValues": []
      },
      "Halo": {
         "version": "2.7.1",
         "since": "2.2.1",
         "term": "Halo",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The part of an object or distribution surrounding some central body or distribution. For example, the particles above the core energies that show enhancements above the thermal population. Typically, a \"power law tail\" shows a break from the core Maxwellian at a particular energy.",
         "usedBy": [],
         "allowedValues": []
      },
      "Halpha": {
         "version": "2.7.1",
         "since": "1.2.1",
         "term": "Halpha",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A spectrum with a wavelength range centered at 656.3 nm. VSO nickname: H-alpha image with a spectrum range of 655.8 nm to 656.8 nm.",
         "usedBy": [],
         "allowedValues": []
      },
      "HAPI": {
         "version": "2.7.1",
         "since": "2.3.0",
         "term": "HAPI",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A Heliophysics Application Programmer Interface (HAPI) specification compliant access point.",
         "usedBy": [],
         "allowedValues": []
      },
      "Hardcopy": {
         "version": "2.7.1",
         "since": "2.2.0",
         "term": "Hardcopy",
         "type": "Enumeration",
         "list": "Hardcopy",
         "element": "",
         "attributes": "",
         "definition": "A permanent reproduction, or copy in the form of a physical object, of any media suitable for direct use by a person.",
         "usedBy": [],
         "allowedValues": [
            "Film",
            "Microfiche",
            "Microfilm",
            "Photograph",
            "PhotographicPlate",
            "Print"
         ]
      },
      "HardXRays": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "HardXRays",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Photons with a wavelength range: 0.001 nm to 0.1 nm and an energy range of 12 keV to 120 keV.",
         "usedBy": [],
         "allowedValues": []
      },
      "HashFunction": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "HashFunction",
         "type": "Enumeration",
         "list": "HashFunction",
         "element": "",
         "attributes": "",
         "definition": "A function or algorithm that converts a digital data object into a hash value. Typically, the hash value is small and concise when compared to the digital data object.",
         "usedBy": [
            "Checksum"
         ],
         "allowedValues": [
            "MD5",
            "SHA1",
            "SHA256"
         ]
      },
      "HashValue": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "HashValue",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The value calculated by a hash function, e.g., the message digest of a digital data object.",
         "usedBy": [
            "Checksum"
         ],
         "allowedValues": []
      },
      "HCC": {
         "version": "2.7.1",
         "since": "2.2.0",
         "term": "HCC",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Heliocentric Cartesian - A 3-D orthonormal coordinate system that is primarily intended to specify with two dimensions a point on the solar disk. The z-axis points toward the observer. The y-axis lies in the plane defined by the solar spin vector and the z-axis is positive northward. The x-axis is perpendicular to the y-axis and z-axis, positive toward solar west. Standard representation for this system is based on (x,y) position of the point of interest expressed either as physical distances or as fractions of the solar disk radius.",
         "usedBy": [],
         "allowedValues": []
      },
      "HCI": {
         "version": "2.7.1",
         "since": "1.2.1",
         "term": "HCI",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Heliographic Carrington Inertial.",
         "usedBy": [],
         "allowedValues": []
      },
      "HCR": {
         "version": "2.7.1",
         "since": "2.2.0",
         "term": "HCR",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Heliocentric Radial - A 3-D orthonormal coordinate system that is primarily intended to specify with two dimensions a point on the solar disk. The z-axis points toward the observer. The y-axis lies in the plane defined by the solar spin vector and the z-axis, positive northward. The x-axis is perpendicular to the y-axis and z-axis, positive toward solar west. Standard representation for this system is based on distance rho from the z-axis (sqrt(x**2+y**2)) and the phase angle psi measured counterclockwise from the positive y-axis (arctan(-y/x)) of the point of interest.",
         "usedBy": [],
         "allowedValues": []
      },
      "HDF": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "HDF",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Hierarchical Data Format.",
         "usedBy": [],
         "allowedValues": []
      },
      "HDF4": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "HDF4",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Hierarchical Data Format, Version 4.",
         "usedBy": [],
         "allowedValues": []
      },
      "HDF5": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "HDF5",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Hierarchical Data Format, Version 5.",
         "usedBy": [],
         "allowedValues": []
      },
      "He10830": {
         "version": "2.7.1",
         "since": "1.2.1",
         "term": "He10830",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A spectrum with a wavelength range centered at 1082.9 nm. VSO nickname: an He 10830 image with a range of 1082.5 nm to 1083.3 nm.",
         "usedBy": [],
         "allowedValues": []
      },
      "He304": {
         "version": "2.7.1",
         "since": "1.3.5",
         "term": "He304",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A spectrum centered around the resonance line of ionized helium at 304 Angstrom (30.4 nm).",
         "usedBy": [],
         "allowedValues": []
      },
      "HeatFlux": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "HeatFlux",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Flow of thermal energy through a gas or plasma typically computed as third moment of a distribution function.",
         "usedBy": [],
         "allowedValues": []
      },
      "HEE": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "HEE",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Heliocentric Earth Ecliptic - A coordinate system where the z-axis is normal to the ecliptic plane, positive northward. The x-axis points from Sun to Earth, see Hapgood, 1992.",
         "usedBy": [],
         "allowedValues": []
      },
      "HEEQ": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "HEEQ",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Heliocentric Earth Equatorial - A coordinate system where the z-axis is normal to the solar equatorial plane, positive northward. The x-axis is generally Earthward in the plane defined by the z-axis and the Sun-Earth direction, see Hapgood, 1992.",
         "usedBy": [],
         "allowedValues": []
      },
      "Heliosheath": {
         "version": "2.7.1",
         "since": "2.2.0",
         "term": "Heliosheath",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The region extending radially outward from the heliospheric termination shock and in which the decelerated solar wind plasma is still significant.",
         "usedBy": [],
         "allowedValues": []
      },
      "Heliosphere": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Heliosphere",
         "type": "Enumeration",
         "list": "Heliosphere",
         "element": "",
         "attributes": "",
         "definition": "The solar atmosphere extending roughly from the outer corona to the edge of the solar plasma at the heliopause separating primarily solar plasma from interstellar plasma.",
         "usedBy": [],
         "allowedValues": [
            "Heliosheath",
            "Inner",
            "NearEarth",
            "Outer",
            "Remote1AU"
         ]
      },
      "HERTN": {
         "version": "2.7.1",
         "since": "2.2.9",
         "term": "HERTN",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Helio-Ecliptic Radial Tangential Normal coordinate system. Typically centered at a spacecraft. The x-axis (radial) is set as the primary-axis, and is defined as the axis pointing from the spacecraft to the Sun. The z-axis (tangential) is set as the secondary-axis, and is defined as that portion of the ecliptic rotational axis which is perpendicular to the primary-axis. The y-axis (Normal) is defined as Z cross X.",
         "usedBy": [],
         "allowedValues": []
      },
      "HG": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "HG",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Heliographic - A heliocentric rotating coordinate system where the z-axis is normal to the solar equatorial plane, positive northward. The x-axis and y-axis rotate with a period of 25.38 days. The zero longitude (x-axis) is defined as the longitude that passed through the ascending node of the solar equator on the ecliptic plane on 1 January, 1854 at 12 UT, see http://nssdc.gsfc.nasa.gov/space/helios/coor_des.html.",
         "usedBy": [],
         "allowedValues": []
      },
      "HGI": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "HGI",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Heliographic Inertial - A heliocentric coordinate system where the z-axis is normal to the solar equatorial plane, positive northward. The x-axis is along the intersection line between solar equatorial and ecliptic planes. The x-axis was positive at SE longitude of 74.367 deg on January 1, 1900. (See SE below.) See http://nssdc.gsfc.nasa.gov/space/helios/coor_des.html.",
         "usedBy": [],
         "allowedValues": []
      },
      "HGRTN": {
         "version": "2.7.1",
         "since": "2.2.9",
         "term": "HGRTN",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Heliocentric Radial Tangential Normal coordinate system (also known as RTN). Typically centered at a spacecraft. Used for IMF and plasma V vectors. The x-axis (radial) is set as the primary-axis, and is defined as the axis pointing from the spacecraft to the Sun. The z-axis (tangential) is set as the secondary-axis, and is defined as that portion of the solar North rotational axis which is perpendicular to the primary-axis. The y-axis (normal) is defined as Z cross X.",
         "usedBy": [],
         "allowedValues": []
      },
      "High": {
         "version": "2.7.1",
         "since": "1.1.0",
         "term": "High",
         "type": "Numeric",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The largest value within a range of possible values.",
         "usedBy": [
            "AzimuthalAngleRange",
            "Bin",
            "EnergyRange",
            "FrequencyRange",
            "MassRange",
            "PitchAngleRange",
            "PolarAngleRange",
            "WavelengthRange"
         ],
         "allowedValues": []
      },
      "Horizontal": {
         "version": "2.7.1",
         "since": "2.2.0",
         "term": "Horizontal",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Parallel to or in the plane of the horizon or a base line.",
         "usedBy": [],
         "allowedValues": []
      },
      "HostContact": {
         "version": "2.7.1",
         "since": "2.3.1",
         "term": "HostContact",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An individual who can provide specific information with regard the hosting of a resource or supporting software.",
         "usedBy": [],
         "allowedValues": []
      },
      "Housekeeping": {
         "version": "2.7.1",
         "since": "2.3.2",
         "term": "Housekeeping",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Parameters that indicate the status or health state of instruments or monitoring devices as measured in physical units such as that for current, voltage, or temperature. Housekeeping data can be analyzed to determine whether instruments are working correctly and the knowledge of their values may be used to avoid errors or even device failures.",
         "usedBy": [],
         "allowedValues": []
      },
      "HPC": {
         "version": "2.7.1",
         "since": "2.2.0",
         "term": "HPC",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Helioprojective Cartesian=A 3-D orthonormal (left-handed) coordinate system that is primarily intended to specify with two dimensions a point on the solar disk. The z-axis points from the observer to the center of the solar disk. The y-axis lies in the plane defined by the solar spin vector and the z-axis, positive northward. The x-axis is perpendicular to the y-axis and z-axis, positive toward solar west. Given as the distance between the observer and the center of the solar disk, the standard representation of an (x,y) point on the solar disk is latitude (arctan(y/d)) and longitude (arctan (x/d)) of the point of interest.",
         "usedBy": [],
         "allowedValues": []
      },
      "HPR": {
         "version": "2.7.1",
         "since": "2.2.0",
         "term": "HPR",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Helioprojective Radial - A 3-D orthonormal (left-handed) coordinate system that is primarily intended to specify with two dimensions a point on the solar disk. The z-axis points from the observer to the center of the solar disk. The y-axis lies in the plane defined by the solar spin vector and the z-axis, positive northward. The x-axis is perpendicular to the y-axis and z-axis, positive toward solar west. Given as the distance between the observer and the center of the solar disk, the standard representation for this system of an (x,y) point on the solar disk is latitude angle theta (arctan(sqrt(x**2+y**2)/d))) or equivalent declination parameter delta (theta-90 deg) and the phase angle psi as measured counterclockwise from the positive y-axis (psi=arctan(-y/x)) of the point of interest.",
         "usedBy": [],
         "allowedValues": []
      },
      "HSM": {
         "version": "2.7.1",
         "since": "2.2.5",
         "term": "HSM",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Heliospheric Solar Magnetospheric - A coordinate system where the x-axis is from Earth to Sun, z-axis is northward in a plane containing the x-axis and the geomagnetic dipole axis.",
         "usedBy": [],
         "allowedValues": []
      },
      "HTML": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "HTML",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A text file containing structured information represented in the Hypertext Mark-up Language (HTML), see http://www.w3.org/MarkUp/.",
         "usedBy": [],
         "allowedValues": []
      },
      "Hybrid": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "Hybrid",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A numerical scheme modeling ions as particles and electrons as a fluid.",
         "usedBy": [],
         "allowedValues": []
      },
      "Hydrodynamic": {
         "version": "2.7.1",
         "since": "1.3.5",
         "term": "Hydrodynamic",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Periodic or quasi-periodic oscillations of fluid quantities.",
         "usedBy": [],
         "allowedValues": []
      },
      "Hyperion": {
         "version": "2.7.1",
         "since": "2.7.1",
         "term": "Hyperion",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The eighth-largest moon of Saturn.",
         "usedBy": [],
         "allowedValues": []
      },
      "I": {
         "version": "2.7.1",
         "since": "1.3.4",
         "term": "I",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Projection of a vector along the first named axis of a coordinate system. Typically, the x-axis, but could be the R-axis for an RTN coordinate system.",
         "usedBy": [],
         "allowedValues": []
      },
      "Iapetus": {
         "version": "2.7.1",
         "since": "2.2.5",
         "term": "Iapetus",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The third largest moon of Saturn and the eleventh largest in the Solar System.",
         "usedBy": [],
         "allowedValues": []
      },
      "IDFS": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "IDFS",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Instrument Data File Set (IDFS) is a set of files written in a prescribed format which contain data, timing data, and metadata. IDFS was developed at Southwest Research Institute (SwRI).",
         "usedBy": [],
         "allowedValues": []
      },
      "IDL": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "IDL",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Interactive Data Language (IDL) save set. IDL is a proprietary format.",
         "usedBy": [],
         "allowedValues": []
      },
      "IJ": {
         "version": "2.7.1",
         "since": "1.3.4",
         "term": "IJ",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A measure of the length of a position or measured vector projected into the I-J (typically X-Y) plane of the coordinate system.",
         "usedBy": [],
         "allowedValues": []
      },
      "IK": {
         "version": "2.7.1",
         "since": "1.3.4",
         "term": "IK",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A measure of the length of a position or measured vector projected into the I-K (typically X-Z) plane of the coordinate system.",
         "usedBy": [],
         "allowedValues": []
      },
      "Image": {
         "version": "2.7.1",
         "since": "1.3.1",
         "term": "Image",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A 2-D representation of data with values at each element of the array related to an intensity or a color.",
         "usedBy": [],
         "allowedValues": []
      },
      "ImageIntensity": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "ImageIntensity",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Measurements of the 2-D distribution of the intensity of photons from some region or object such as the Sun or the polar auroral regions, can be in any wavelength band, and polarized, etc.",
         "usedBy": [],
         "allowedValues": []
      },
      "Imager": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Imager",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An instrument which samples the radiation from an area at one or more spectral ranges emitted or reflected by an object.",
         "usedBy": [],
         "allowedValues": []
      },
      "ImageURL": {
         "version": "2.7.1",
         "since": "1.3.5",
         "term": "ImageURL",
         "type": "URL",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A URL to graphic, image or movie.",
         "usedBy": [
            "Annotation"
         ],
         "allowedValues": []
      },
      "ImaginaryPart": {
         "version": "2.7.1",
         "since": "2.3.2",
         "term": "ImaginaryPart",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Any number z can in general be represented by its complex form with z=a+ib where i, which is defined as the square root of -1, signifies the imaginary component of the number z. The coefficient b is called the imaginary part of the complex number z.",
         "usedBy": [],
         "allowedValues": []
      },
      "ImagingSpectrometer": {
         "version": "2.7.1",
         "since": "1.2.1",
         "term": "ImagingSpectrometer",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An instrument which is a multispectral scanner with a very large number of channels (typically from 64 channels up to 256 channels) with very narrow bandwidths.",
         "usedBy": [],
         "allowedValues": []
      },
      "IMFClockAngle": {
         "version": "2.7.1",
         "since": "2.2.4",
         "term": "IMFClockAngle",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The clockwise angle of the direction of interplanetary magnetic field (IMF) measured in the plane of the body pole perpendicular to the line between the body and the Sun.",
         "usedBy": [],
         "allowedValues": []
      },
      "Incident": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "Incident",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Direction-dependent property.",
         "usedBy": [],
         "allowedValues": []
      },
      "Index": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Index",
         "type": "Sequence",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The location of an item in an array or vector. An index can be multivalued to represent the location in a multi-dimensional object. The index of the first item is \"1\". A value of \"0\" is a wild card for all elements at the location in an array. A value of \"-1\" is a reference to the dimension at the location in the array. A \"-1\" is used when describing the attributes of the dimension, whereas \"0\" or a positive integer is used to describe attributes of individual elements.",
         "usedBy": [
            "Element",
            "RenderingHints"
         ],
         "allowedValues": []
      },
      "Inferred": {
         "version": "2.7.1",
         "since": "1.3.6",
         "term": "Inferred",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Determined by the analysis of other information or resources.",
         "usedBy": [],
         "allowedValues": []
      },
      "InformationURL": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "InformationURL",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Attributes of the method of acquiring additional information.",
         "usedBy": [
            "ResourceHeader"
         ],
         "subElements": [
            "Name",
            "URL",
            "Description",
            "Language"
         ],
         "allowedValues": []
      },
      "Infrared": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Infrared",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Photons with a wavelength range: 760 nm to 10^6 nm.",
         "usedBy": [],
         "allowedValues": []
      },
      "Inner": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Inner",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The region of the heliosphere extending radially outward from the solar coronal base to just inside 1 AU.",
         "usedBy": [],
         "allowedValues": []
      },
      "InputField": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "InputField",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Parameters associated to a field imposed in the model.",
         "usedBy": [
            "ModelRun"
         ],
         "subElements": [
            "Name",
            "Set",
            "ParameterKey",
            "Description",
            "Caveats",
            "ModeledRegion",
            "CoordinateSystem",
            "Qualifier",
            "FieldQuantity",
            "Units",
            "UnitsConversion",
            "InputLabel",
            "FieldValue",
            "InputTableURL",
            "ValidMin",
            "ValidMax",
            "FieldModel",
            "ModelURL"
         ],
         "allowedValues": []
      },
      "InputLabel": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "InputLabel",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A string list of the labels of each dimension of the input parameter.",
         "usedBy": [
            "InputField"
         ],
         "allowedValues": []
      },
      "InputParameter": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "InputParameter",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A container of information regarding an input parameter of the model run.",
         "usedBy": [
            "ModelRun"
         ],
         "subElements": [
            "Name",
            "Description",
            "Caveats",
            "ModeledRegion",
            "Qualifier",
            "InputTableURL",
            "ParameterQuantity",
            "Property"
         ],
         "allowedValues": []
      },
      "InputPopulation": {
         "version": "2.7.1",
         "since": "2.6.0",
         "term": "InputPopulation",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A container element that specifies the characteristics of a particle population used as input to a model.",
         "usedBy": [
            "ModelRun"
         ],
         "subElements": [
            "Name",
            "Set",
            "ParameterKey",
            "Description",
            "Caveats",
            "ModeledRegion",
            "Qualifier",
            "ParticleType",
            "ChemicalFormula",
            "AtomicNumber",
            "PopulationMassNumber",
            "PopulationChargeState",
            "PopulationDensity",
            "PopulationTemperature",
            "PopulationFlowSpeed",
            "Distribution",
            "ProductionRate",
            "TotalProductionRate",
            "InputTableURL",
            "DensityProfile",
            "ModelURL"
         ],
         "allowedValues": []
      },
      "InputProcess": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "InputProcess",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Parameters associated to a chemical process happening in the model.",
         "usedBy": [
            "ModelRun"
         ],
         "subElements": [
            "Name",
            "Set",
            "ParameterKey",
            "Description",
            "Caveats",
            "ModeledRegion",
            "ProcessType",
            "Units",
            "UnitsConversion",
            "ProcessCoefficient",
            "ProcessCoeffType",
            "ProcessModel",
            "ModelURL"
         ],
         "allowedValues": []
      },
      "InputProperties": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "InputProperties",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Properties.",
         "usedBy": [
            "Model"
         ],
         "subElements": [
            "Property"
         ],
         "allowedValues": []
      },
      "InputProperty": {
         "version": "2.7.1",
         "since": "2.4.0",
         "term": "InputProperty",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A container of attributes regarding an input property of an application.",
         "usedBy": [
            "Software"
         ],
         "subElements": [
            "Name",
            "Description",
            "Caveats",
            "Units",
            "ValidMin",
            "ValidMax"
         ],
         "allowedValues": []
      },
      "InputResourceID": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "InputResourceID",
         "type": "ID",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The resource identifier for a resource which was used to generate this resource.",
         "usedBy": [
            "Catalog",
            "DisplayData",
            "DisplayOutput",
            "Document",
            "ModelRun",
            "NumericalData",
            "NumericalOutput"
         ],
         "allowedValues": []
      },
      "InputTableURL": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "InputTableURL",
         "type": "URL",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A URL to a table containing input parameters.",
         "usedBy": [
            "InputField",
            "InputParameter",
            "InputPopulation",
            "RegionParameter"
         ],
         "allowedValues": []
      },
      "Inspection": {
         "version": "2.7.1",
         "since": "1.3.6",
         "term": "Inspection",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Determined by the analysis or assessment performed by a person.",
         "usedBy": [],
         "allowedValues": []
      },
      "Installer": {
         "version": "2.7.1",
         "since": "2.4.0",
         "term": "Installer",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A piece of software that installs a program or package on a system.",
         "usedBy": [
            "ExecutionEnvironment"
         ],
         "subElements": [
            "Availability",
            "AccessRights",
            "Acknowledgement",
            "URL"
         ],
         "allowedValues": []
      },
      "Instrument": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Instrument",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A device that makes measurements used to characterize a physical phenomenon, or a family of like devices.",
         "usedBy": [
            "Spase"
         ],
         "subElements": [
            "ResourceID",
            "NamingAuthority",
            "ResourceType",
            "ResourceHeader",
            "InstrumentType",
            "InstrumentGroupID",
            "InvestigationName",
            "OperatingSpan",
            "ObservatoryID",
            "Caveats",
            "RORIdentifier",
            "Extension"
         ],
         "allowedValues": []
      },
      "InstrumentGroupID": {
         "version": "2.7.1",
         "since": "2.3.2",
         "term": "InstrumentGroupID",
         "type": "ID",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The identifier of an Instrument resource which the referring resource is a member of.",
         "usedBy": [
            "Instrument"
         ],
         "allowedValues": []
      },
      "InstrumentID": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "InstrumentID",
         "type": "ID",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The identifier of an Instrument resource.",
         "usedBy": [
            "Catalog",
            "DisplayData",
            "NumericalData"
         ],
         "allowedValues": []
      },
      "InstrumentLead": {
         "version": "2.7.1",
         "since": "2.3.2",
         "term": "InstrumentLead",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An individual who is the designated leader of an instrument or instrument package.",
         "usedBy": [],
         "allowedValues": []
      },
      "InstrumentMode": {
         "version": "2.7.1",
         "since": "2.0.2",
         "term": "InstrumentMode",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An indication of a state (mode) in which the instrument is operating. How a mode influences the interpretation and representation of data is described in instrument related documentation.",
         "usedBy": [],
         "allowedValues": []
      },
      "InstrumentScientist": {
         "version": "2.7.1",
         "since": "2.4.1",
         "term": "InstrumentScientist",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A scientist associated with a science instrument team with special familiarity and expertise on specific aspects of the design and operations of the instrument and the responsibility of ensuring the measurement capabilities of the instrument.",
         "usedBy": [],
         "allowedValues": []
      },
      "InstrumentStatus": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "InstrumentStatus",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A quantity directly related to the operation or function of an instrument.",
         "usedBy": [],
         "allowedValues": []
      },
      "InstrumentType": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "InstrumentType",
         "type": "Enumeration",
         "list": "InstrumentType",
         "element": "",
         "attributes": "",
         "definition": "A characterization of an integrated collection of software and hardware containing one or more sensors and associated controls used to produce data on an environment.",
         "usedBy": [
            "Instrument"
         ],
         "allowedValues": [
            "Antenna",
            "Channeltron",
            "Coronograph",
            "DoubleSphere",
            "DustDetector",
            "ElectronDriftInstrument",
            "ElectrostaticAnalyser",
            "EnergeticParticleInstrument",
            "Experiment",
            "FaradayCup",
            "FluxFeedback",
            "FourierTransformSpectrograph",
            "GeigerMuellerTube",
            "Imager",
            "ImagingSpectrometer",
            "Interferometer",
            "IonChamber",
            "IonDrift",
            "IonGauge",
            "LangmuirProbe",
            "Lidar",
            "LongWire",
            "Magnetograph",
            "Magnetometer",
            "MassSpectrometer",
            "MicrochannelPlate",
            "MultispectralImager",
            "NeutralAtomImager",
            "NeutralParticleDetector",
            "ParticleCorrelator",
            "ParticleDetector",
            "Photometer",
            "PhotomultiplierTube",
            "Photopolarimeter",
            "Platform",
            "ProportionalCounter",
            "QuadrisphericalAnalyser",
            "Radar",
            "Radiometer",
            "ResonanceSounder",
            "RetardingPotentialAnalyser",
            "Riometer",
            "ScintillationDetector",
            "SearchCoil",
            "SolidStateDetector",
            "Sounder",
            "SpacecraftPotentialControl",
            "SpectralPowerReceiver",
            "Spectrometer",
            "TimeOfFlight",
            "Unspecified",
            "WaveformReceiver"
         ]
      },
      "Integral": {
         "version": "2.7.1",
         "since": "1.1.0",
         "term": "Integral",
         "type": "Enumeration",
         "list": "Integral",
         "element": "",
         "attributes": "",
         "definition": "A flux measurement in a broad range of energy and solid angle.",
         "usedBy": [],
         "allowedValues": [
            "Area",
            "Bandwidth",
            "SolidAngle"
         ]
      },
      "Intensity": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Intensity",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The measurement of radiant or wave energy per unit detector area per unit bandwidth per unit solid angle per unit time.",
         "usedBy": [],
         "allowedValues": []
      },
      "Interferometer": {
         "version": "2.7.1",
         "since": "1.2.1",
         "term": "Interferometer",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An instrument to study the properties of two or more waves from the pattern of interference created by their superposition.",
         "usedBy": [],
         "allowedValues": []
      },
      "Interior": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Interior",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The region inside the body which is not visible from outside the body.",
         "usedBy": [],
         "allowedValues": []
      },
      "InterplanetaryCoronalMassEjection": {
         "version": "2.7.1",
         "since": "2.6.1",
         "term": "InterplanetaryCoronalMassEjection",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An Interplanetary Coronal Mass Ejection (ICME) is a Coronal Mass Ejection (CME) observed in the solar wind far away from the Sun.",
         "usedBy": [],
         "allowedValues": []
      },
      "InterplanetaryShock": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "InterplanetaryShock",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A shock propagating generally anti-sunward through the slower solar wind, often seen in front of CME-associated plasma clouds.",
         "usedBy": [],
         "allowedValues": []
      },
      "Interstellar": {
         "version": "2.7.1",
         "since": "1.3.2",
         "term": "Interstellar",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The region between stars outside of any stellar heliopause.",
         "usedBy": [],
         "allowedValues": []
      },
      "InvestigationName": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "InvestigationName",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The name given to the contract or engagement which enabled the data to be produced. Each investigation is associated with a Principal Investigator or Guest Investigator who was responsible for the original proposal. For single principal investigator missions each major subsystem having its own identified Team Leader may also be classed as an Investigation for the purposes of data archiving.",
         "usedBy": [
            "Instrument"
         ],
         "allowedValues": []
      },
      "Io": {
         "version": "2.7.1",
         "since": "2.2.5",
         "term": "Io",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The innermost of the four round moons of the planet Jupiter.",
         "usedBy": [],
         "allowedValues": []
      },
      "Ion": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Ion",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An atom that has acquired a net electric charge by gaining or losing one or more electrons (Note: Z>2).",
         "usedBy": [],
         "allowedValues": []
      },
      "IonChamber": {
         "version": "2.7.1",
         "since": "1.3.4",
         "term": "IonChamber",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A device in which the collected electrical charge from ionization in a gas-filled cavity is taken to be the proportion to some parameter (e.g., dose or exposure) of radiation field.",
         "usedBy": [],
         "allowedValues": []
      },
      "IonComposition": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "IonComposition",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "In situ measurements of the relative flux or density of electrically charged particles in the space environment. May give simple fluxes, but full distribution functions are sometimes measured.",
         "usedBy": [],
         "allowedValues": []
      },
      "IonDrift": {
         "version": "2.7.1",
         "since": "1.3.1",
         "term": "IonDrift",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A device which measures the current produced by the displacement of ambient ions on a grid, thereby allowing the determination of the ion trajectory and velocity.",
         "usedBy": [],
         "allowedValues": []
      },
      "IonGauge": {
         "version": "2.7.1",
         "since": "2.3.1",
         "term": "IonGauge",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A device which measures low-pressure or vacuum neutral gas with pressures ranging from 10^-3 Torr to 10^-10 Torr. An ion gauge is an electronic amplifying vacuum tube consisting of three electrodes inside an evacuated glass envelope, with the filament being the cathode.",
         "usedBy": [],
         "allowedValues": []
      },
      "Ionosphere": {
         "version": "2.7.1",
         "since": "1.1.0",
         "term": "Ionosphere",
         "type": "Enumeration",
         "list": "Ionosphere",
         "element": "",
         "attributes": "",
         "definition": "The charged or ionized gases surrounding a body that are nominally bound to the body by virtue of the gravitational attraction.",
         "usedBy": [],
         "allowedValues": [
            "DRegion",
            "ERegion",
            "FRegion",
            "Topside"
         ]
      },
      "Irradiance": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Irradiance",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A radiometric term for the power of electromagnetic radiation at a surface, per unit area. Irradiance is used when the electromagnetic radiation is incident on the surface. Irradiance data may be reported in any units (i.e., counts/s) due to, for example, being at a particular wavelength, or to being a not fully calibrated relative measurement.",
         "usedBy": [],
         "allowedValues": []
      },
      "J": {
         "version": "2.7.1",
         "since": "1.3.4",
         "term": "J",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Projection of a vector along the second named axis of a coordinate system. Typically, the y-axis, but could be the T-axis for an RTN coordinate system.",
         "usedBy": [],
         "allowedValues": []
      },
      "J2000": {
         "version": "2.7.1",
         "since": "1.1.0",
         "term": "J2000",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An astronomical coordinate system which uses the mean equator and equinox of Julian date 2451545.0 TT (Terrestrial Time), or January 1, 2000, noon TT to define a celestial reference frame.",
         "usedBy": [],
         "allowedValues": []
      },
      "JK": {
         "version": "2.7.1",
         "since": "1.3.4",
         "term": "JK",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A measure of the length of a position or measured vector projected into the J-K (typically Y-Z) plane of the coordinate system.",
         "usedBy": [],
         "allowedValues": []
      },
      "JPEG": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "JPEG",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A binary format for still images defined by the Joint Photographic Experts Group.",
         "usedBy": [],
         "allowedValues": []
      },
      "JSM": {
         "version": "2.7.1",
         "since": "2.2.4",
         "term": "JSM",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Jovian Solar Magnetospheric - A coordinate system related to Jupiter where the x-axis is from Jupiter to Sun, z-axis is northward in a plane containing the x-axis and the Jovian dipole axis.",
         "usedBy": [],
         "allowedValues": []
      },
      "JSO": {
         "version": "2.7.1",
         "since": "2.2.4",
         "term": "JSO",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Jovian Solar Orbital - A coordinate system related to Jupiter where x-axis is anti-sunward and the y-axis points in the orbital velocity direction.",
         "usedBy": [],
         "allowedValues": []
      },
      "JSON": {
         "version": "2.7.1",
         "since": "2.2.7",
         "term": "JSON",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "JavaScript Object Notation - A lightweight data-interchange format.",
         "usedBy": [],
         "allowedValues": []
      },
      "Jupiter": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Jupiter",
         "type": "Enumeration",
         "list": "Jupiter",
         "element": "",
         "attributes": "",
         "definition": "The fifth planet from the Sun in our solar system.",
         "usedBy": [],
         "allowedValues": [
            "Amalthea",
            "Callisto",
            "Europa",
            "Ganymede",
            "Io",
            "Magnetosphere",
            "Magnetosphere.Magnetotail",
            "Magnetosphere.Main",
            "Magnetosphere.Plasmasphere",
            "Magnetosphere.Polar",
            "Magnetosphere.RadiationBelt",
            "Magnetosphere.RingCurrent"
         ]
      },
      "K": {
         "version": "2.7.1",
         "since": "1.3.4",
         "term": "K",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Projection of a vector along the third named axis of a coordinate system. Typically, the z-axis, but could be the N-axis for an RTN coordinate system.",
         "usedBy": [],
         "allowedValues": []
      },
      "K7699": {
         "version": "2.7.1",
         "since": "1.2.1",
         "term": "K7699",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A spectrum with a wavelength range centered at 769.9 nm. VSO nickname: K-7699 dopplergram with a range of 769.8 nm to 770.0 nm.",
         "usedBy": [],
         "allowedValues": []
      },
      "Keyword": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Keyword",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A word or phrase that is relevant to the resource but does not exist in other documentary information.",
         "usedBy": [
            "Catalog",
            "DisplayData",
            "DisplayOutput",
            "Document",
            "ModelRun",
            "NumericalData",
            "NumericalOutput"
         ],
         "allowedValues": []
      },
      "KSM": {
         "version": "2.7.1",
         "since": "2.2.4",
         "term": "KSM",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Kronian Solar Magnetospheric - A coordinate system related to Saturn where the x-axis is anti-sunward, z-axis is northward in a plane containing the x-axis and the Kronian dipole axis.",
         "usedBy": [],
         "allowedValues": []
      },
      "KSO": {
         "version": "2.7.1",
         "since": "2.2.4",
         "term": "KSO",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Kronian Solar Orbital - A coordinate system related to Saturn where x-axis is anti-sunward and the y-axis points in the orbital velocity direction.",
         "usedBy": [],
         "allowedValues": []
      },
      "LandingPageURL": {
         "version": "2.7.1",
         "since": "2.4.2",
         "term": "LandingPageURL",
         "type": "URL",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A Uniform Resource Locator (URL) to a page that provides a way to access the resource. A landing page should contain a full bibliographic citation so that a human can tell they have arrived at the correct resource, and additional information about the resource that might not be easily retrievable from the resource itself.",
         "usedBy": [
            "PublicationInfo"
         ],
         "allowedValues": []
      },
      "LangmuirProbe": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "LangmuirProbe",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A monopole antenna associated with an instrument. The instrument applies a potential to the antenna which is swept to determine the voltage/current characteristic. This provides information about the plasma surrounding the probe and spacecraft.",
         "usedBy": [],
         "allowedValues": []
      },
      "Language": {
         "version": "2.7.1",
         "since": "1.3.0",
         "term": "Language",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The two-character indicator of language selected from the ISO 639-1 codes for the representation of names of languages.",
         "usedBy": [
            "AccessURL",
            "InformationURL"
         ],
         "allowedValues": []
      },
      "Latitude": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Latitude",
         "type": "Numeric",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The angular distance north (positive) or south (negative) from the equator, measured along the meridian passing through the point.",
         "usedBy": [
            "Location"
         ],
         "allowedValues": []
      },
      "Layout": {
         "version": "2.7.1",
         "since": "1.3.1",
         "term": "Layout",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The structured arrangement of items in a collection.",
         "usedBy": [],
         "allowedValues": []
      },
      "LBHBand": {
         "version": "2.7.1",
         "since": "1.3.5",
         "term": "LBHBand",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Lyman-Birge-Hopfield band in the far ultraviolet range with wavelength range of 140 nm to 170 nm.",
         "usedBy": [],
         "allowedValues": []
      },
      "LGM": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "LGM",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Local Geomagnetic - A coordinate system used mainly for Earth surface or near-Earth surface magnetic field data. The x-axis northward from observation point in a geographic meridian. The z-axis downward towards center of the Earth. In this system, the total horizontal component, H, is equal to sqrt(Bx^2+By^2) and declination angle, D is equal to arctan(By/Bx).",
         "usedBy": [],
         "allowedValues": []
      },
      "Lidar": {
         "version": "2.7.1",
         "since": "2.6.1",
         "term": "Lidar",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Lidar (Light Detection and Ranging) is a class of instruments that uses laser light to study atmospheric properties from the ground up to the top of the atmosphere. Such instruments have been used to study atmospheric gases, aerosols, clouds, and temperature.",
         "usedBy": [],
         "allowedValues": []
      },
      "LikelihoodRating": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "LikelihoodRating",
         "type": "Enumeration",
         "list": "ConfidenceRating",
         "element": "",
         "attributes": "",
         "definition": "The probability that something is true or possible.",
         "usedBy": [
            "ModelRun"
         ],
         "allowedValues": [
            "Probable",
            "Strong",
            "Unlikely",
            "Weak"
         ]
      },
      "Linear": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Linear",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Polarization where the E-field vector is confined to a given plane.",
         "usedBy": [],
         "allowedValues": []
      },
      "LinearScale": {
         "version": "2.7.1",
         "since": "1.3.4",
         "term": "LinearScale",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Intervals which are equally spaced.",
         "usedBy": [],
         "allowedValues": []
      },
      "LineDepth": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "LineDepth",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The measure of the amount of absorption below the continuum (depth) in a particular wavelength or frequency in an absorption spectrum.",
         "usedBy": [],
         "allowedValues": []
      },
      "LineOfSight": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "LineOfSight",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The line of sight is the line that connects the observer with the observed object. This expression is often used with measurements of Doppler velocity and magnetic field in magnetograms, where only the component of the vector field directed along the line of sight is measured.",
         "usedBy": [],
         "allowedValues": []
      },
      "Lines": {
         "version": "2.7.1",
         "since": "2.6.0",
         "term": "Lines",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A set of 1-D arrays that contain the values of physical parameters, i.e., magnetic field vectors, particle densities, temperatures, etc., at the grid points along a line though a model volume. For instance, the points of the line may correspond to the trajectory of a spacecraft through model space.",
         "usedBy": [],
         "allowedValues": []
      },
      "Listing": {
         "version": "2.7.1",
         "since": "2.3.0",
         "term": "Listing",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A listing of files either through FTP or HTTP.",
         "usedBy": [],
         "allowedValues": []
      },
      "LocalGeographic": {
         "version": "2.7.1",
         "since": "2.6.1",
         "term": "LocalGeographic",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A coordinate system used mainly for Earth surface or near-Earth surface magnetic field or other vector measurements. The X-axis points northward from observation point in a geographic meridian in the horizontal plane. The Y-axis points eastward from observation point in a geographic latitude in the horizontal plane. The Z-axis points downward towards center of the Earth.",
         "usedBy": [],
         "allowedValues": []
      },
      "LocalGeomagnetic": {
         "version": "2.7.1",
         "since": "2.6.1",
         "term": "LocalGeomagnetic",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A coordinate system used mainly for Earth surface or near-Earth surface magnetic field data. The H-axis points northward toward the north magnetic pole from observation point in a geomagnetic meridian in the horizontal plane. The D-axis points eastward from observation point in a geomagnetic latitude in the horizontal plane. The Z-axis points downward towards center of the Earth.",
         "usedBy": [],
         "allowedValues": []
      },
      "Location": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Location",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A position in space definable by a regional referencing system and geographic coordinates.",
         "usedBy": [
            "Observatory"
         ],
         "subElements": [
            "ObservatoryRegion",
            "CoordinateSystemName",
            "Latitude",
            "Longitude",
            "Elevation"
         ],
         "allowedValues": []
      },
      "LogScale": {
         "version": "2.7.1",
         "since": "1.3.4",
         "term": "LogScale",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Intervals which are spaced proportionally to the logarithms of the values being represented.",
         "usedBy": [],
         "allowedValues": []
      },
      "Longitude": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Longitude",
         "type": "Numeric",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The angular distance measured west (negative) or east (positive) from a north-south line called the Prime Meridian.",
         "usedBy": [
            "Location"
         ],
         "allowedValues": []
      },
      "LongWire": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "LongWire",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A dipole antenna constructed by two active sensing elements that are wires deployed in the equatorial plane on opposite sides of a spinning spacecraft. The, wire length is usually several times the spacecraft diameter.",
         "usedBy": [],
         "allowedValues": []
      },
      "Low": {
         "version": "2.7.1",
         "since": "1.1.0",
         "term": "Low",
         "type": "Numeric",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The smallest value within a range of possible values.",
         "usedBy": [
            "AzimuthalAngleRange",
            "Bin",
            "EnergyRange",
            "FrequencyRange",
            "MassRange",
            "PitchAngleRange",
            "PolarAngleRange",
            "WavelengthRange"
         ],
         "allowedValues": []
      },
      "LowerHybridFrequency": {
         "version": "2.7.1",
         "since": "2.3.1",
         "term": "LowerHybridFrequency",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Lower hybrid oscillations involve longitudinal motions of electrons and ions in a magnetized plasma. The propagation of lower hybrid waves must be close to perpendicular to the background magnetic field in so that electrons cannot move along field lines thus preventing wave growth. The lower hybrid frequency, &phi;<sub>LH</sub>, can be calculated by using &phi;<sub>LH</sub>=[(&omega;<sub>ce</sub>&omega;<sub>ci</sub>)<sup>-1</sup>+&phi;<sub>pi</sub><sup>-2</sup>]<sup>-1/2</sup> where &omega;<sub>ce</sub> and &omega;<sub>ci</sub> are the electron and ion cyclotron frequencies, respectively, and $phi;<sub>LH</sub> is the ion plasma frequency.",
         "usedBy": [],
         "allowedValues": []
      },
      "LShell": {
         "version": "2.7.1",
         "since": "2.3.2",
         "term": "LShell",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The L-shell is the magnetic equatorial radius (in units of planetary radii) of a dipole magnetic field line. For instance, if the L-shell value equals 6 say at Earth, the magnetic field lines cross the magnetic equator at six Earth radii. The L-shell concept can be applied generally to any magnetized planet or satellite with a dominant dipolar magnetic field moment.",
         "usedBy": [],
         "allowedValues": []
      },
      "MAG": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "MAG",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Geomagnetic - geocentric. The z-axis is parallel to the geomagnetic dipole axis, positive north. The x-axis is in the plane defined by the z-axis and the rotation axis of the Earth. If N is a unit vector from the center of the Earth to the north geographic pole, the signs of the y-axis and x-axis are given by the vector cross products N cross z and y cross z, respectively, see Russell, 1971 and http://cdpp.cnes.fr/00428.pdf.",
         "usedBy": [],
         "allowedValues": []
      },
      "Magnetic": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Magnetic",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The physical attribute attributed to a magnet or its equivalent.",
         "usedBy": [],
         "allowedValues": []
      },
      "MagneticCloud": {
         "version": "2.7.1",
         "since": "1.3.0",
         "term": "MagneticCloud",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A transient event observed in the solar wind characterized as a region of enhanced magnetic field strength, smooth and large-scale rotation of the magnetic field vector, low proton temperature, and low plasma beta.",
         "usedBy": [],
         "allowedValues": []
      },
      "MagneticField": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "MagneticField",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A region of space near a magnetized body where magnetic forces can be detected (as measured by methods such as Zeeman splitting, etc.).",
         "usedBy": [],
         "allowedValues": []
      },
      "MagneticMoment": {
         "version": "2.7.1",
         "since": "2.3.1",
         "term": "MagneticMoment",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A constant of motion related to the gyromotion of a particle in a magnetic field that is either static or slowly varying with respect to the gyroperiod. The magnetic moment is usually denoted by using the lower-case Greek letter for mu and can be calculated by using mu equal to m(u^2/2B) where m is the particle mass, u is the velocity of the particle perpendicular to the constant or average magnetic field direction, and B is the magnitude of the magnetic field strength.",
         "usedBy": [],
         "allowedValues": []
      },
      "Magnetogram": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Magnetogram",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Measurements of the vector or line-of-sight magnetic field determined from remote sensing measurements of the detailed structure of spectral lines, including their splitting and polarization.",
         "usedBy": [],
         "allowedValues": []
      },
      "Magnetograph": {
         "version": "2.7.1",
         "since": "2.2.3",
         "term": "Magnetograph",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A special type of magnetometer that records a time plot of the local magnetic field near the instrument or a telescope capable of determining the magnetic field strength and/or direction on a distant object such as the Sun, using the Zeeman splitting or other spectral signatures of magnetization.",
         "usedBy": [],
         "allowedValues": []
      },
      "Magnetometer": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Magnetometer",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An instrument which measures the ambient magnetic field.",
         "usedBy": [],
         "allowedValues": []
      },
      "MagnetopauseCrossing": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "MagnetopauseCrossing",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A crossing of the interface between the shocked solar wind in the magnetosheath and the magnetic field and plasma in the magnetosphere.",
         "usedBy": [],
         "allowedValues": []
      },
      "Magnetosheath": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Magnetosheath",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The region between the bow shock and the magnetopause, characterized by very turbulent plasma.",
         "usedBy": [],
         "allowedValues": []
      },
      "MagnetosonicMachNumber": {
         "version": "2.7.1",
         "since": "1.3.5",
         "term": "MagnetosonicMachNumber",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The ratio of the velocity of fast mode waves to the Alfven velocity.",
         "usedBy": [],
         "allowedValues": []
      },
      "Magnetosphere": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Magnetosphere",
         "type": "Enumeration",
         "list": "Magnetosphere",
         "element": "",
         "attributes": "",
         "definition": "The region of space above the atmosphere or surface of the planet and bounded by the magnetopause that is under the direct influence of the magnetic field of a planetary body.",
         "usedBy": [],
         "allowedValues": [
            "Magnetotail",
            "Main",
            "Plasmasphere",
            "Polar",
            "RadiationBelt",
            "RingCurrent"
         ]
      },
      "Magnetotail": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Magnetotail",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The region of space within the magnetosphere of a magnetized planetary body where the nightside magnetic field is stretched out in the anti-stellar direction by stellar wind interaction into a windsock-like shape. For Earth, solar wind-magnetosphere interaction produces a magnetotail that extends tailward from a distance of about 10 R<sub>E</sub> on the nightside to downstream distances beyond 1000 R<sub>E</sub>.",
         "usedBy": [],
         "allowedValues": []
      },
      "Magnitude": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Magnitude",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A measure of the strength of a vector quantity or length of its representational vector.",
         "usedBy": [],
         "allowedValues": []
      },
      "Main": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Main",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The region of the magnetosphere where the magnetic field lines are closed, but does not include the gaseous region gravitationally bound to the body.",
         "usedBy": [],
         "allowedValues": []
      },
      "Mars": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Mars",
         "type": "Enumeration",
         "list": "Mars",
         "element": "",
         "attributes": "",
         "definition": "The fourth planet from the Sun in our solar system.",
         "usedBy": [],
         "allowedValues": [
            "Deimos",
            "Magnetosphere",
            "Magnetosphere.Magnetotail",
            "Magnetosphere.Main",
            "Magnetosphere.Plasmasphere",
            "Magnetosphere.Polar",
            "Magnetosphere.RadiationBelt",
            "Magnetosphere.RingCurrent",
            "Phobos"
         ]
      },
      "Mass": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Mass",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The measure of inertia (mass) of individual objects (e.g., aerosols).",
         "usedBy": [],
         "allowedValues": []
      },
      "MassDensity": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "MassDensity",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The mass of particles per unit volume.",
         "usedBy": [],
         "allowedValues": []
      },
      "MassMixingRatio": {
         "version": "2.7.1",
         "since": "2.7.0",
         "term": "MassMixingRatio",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The ratio of the mass of one atomic or compound species to the total mass of all species in a given volume.",
         "usedBy": [],
         "allowedValues": []
      },
      "MassNumber": {
         "version": "2.7.1",
         "since": "2.0.2",
         "term": "MassNumber",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The total number of protons and neutrons (together known as nucleons) in an atomic nucleus.",
         "usedBy": [],
         "allowedValues": []
      },
      "MassPerCharge": {
         "version": "2.7.1",
         "since": "2.3.2",
         "term": "MassPerCharge",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The mass, m, per unit net charge, q, that is m/q, for an electron or an ionized atom, molecule, or dust particle.",
         "usedBy": [],
         "allowedValues": []
      },
      "MassRange": {
         "version": "2.7.1",
         "since": "2.2.9",
         "term": "MassRange",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The range of possible mass for a group of particle observations.",
         "usedBy": [
            "Particle"
         ],
         "subElements": [
            "Low",
            "High",
            "Units",
            "Bin"
         ],
         "allowedValues": []
      },
      "MassSpectrometer": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "MassSpectrometer",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An instrument which distinguishes chemical species in terms of their different isotopic masses.",
         "usedBy": [],
         "allowedValues": []
      },
      "MATLAB_4": {
         "version": "2.7.1",
         "since": "1.1.0",
         "term": "MATLAB_4",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "MATLAB Workspace save set, version 4. MAT-files are double-precision, binary, MATLAB format files. MATLAB is a proprietary product of The MathWorks.",
         "usedBy": [],
         "allowedValues": []
      },
      "MATLAB_6": {
         "version": "2.7.1",
         "since": "1.1.0",
         "term": "MATLAB_6",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "MATLAB Workspace save set, version 6. MAT-files are double-precision, binary, MATLAB format files. MATLAB is a proprietary product of The MathWorks.",
         "usedBy": [],
         "allowedValues": []
      },
      "MATLAB_7": {
         "version": "2.7.1",
         "since": "1.1.0",
         "term": "MATLAB_7",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "MATLAB Workspace save set, version 7. MAT-files are double-precision, binary, MATLAB format files. Version 7 includes data compression and Unicode encoding. MATLAB is a proprietary product of The MathWorks.",
         "usedBy": [],
         "allowedValues": []
      },
      "Maximum": {
         "version": "2.7.1",
         "since": "2.2.0",
         "term": "Maximum",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The largest value of a batch or sample or the upper bound of a probability distribution.",
         "usedBy": [],
         "allowedValues": []
      },
      "MaximumElevation": {
         "version": "2.7.1",
         "since": "2.4.2",
         "term": "MaximumElevation",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The highest vertical elevation of region above a surface (such as sea level or land) of a planet or natural satellite.",
         "usedBy": [
            "SpatialCoverage"
         ],
         "allowedValues": []
      },
      "MD5": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "MD5",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Message Digest 5 (MD5) is a 128-bit message digest algorithm created in 1991 by Professor Ronald Rivest.",
         "usedBy": [],
         "allowedValues": []
      },
      "MeasurementType": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "MeasurementType",
         "type": "Enumeration",
         "list": "MeasurementType",
         "element": "",
         "attributes": "",
         "definition": "The enumeration of the specific measurement target (e.g., EnergeticParticles or IonComposition), method of measurement (e.g., Interferometry), or the particular compilation of measurements (e.g., a composite dataset consisting of measurements from multiple instruments or platforms, such as Dopplergram, Keogram, and ElectronColumnDensity (TEC)) that reflect a richer context (e.g., structure or dynamics) of the observational target.",
         "usedBy": [
            "DisplayData",
            "DisplayOutput",
            "NumericalData",
            "NumericalOutput"
         ],
         "allowedValues": [
            "ActivityIndex",
            "Dopplergram",
            "Dust",
            "ElectricField",
            "EnergeticParticles",
            "Ephemeris",
            "ImageIntensity",
            "InstrumentStatus",
            "IonComposition",
            "Irradiance",
            "MagneticField",
            "Magnetogram",
            "NeutralAtomImages",
            "NeutralGas",
            "Profile",
            "Radiance",
            "Spectrum",
            "SPICE",
            "ThermalPlasma",
            "Waves",
            "Waves.Active",
            "Waves.Passive"
         ]
      },
      "Median": {
         "version": "2.7.1",
         "since": "2.2.0",
         "term": "Median",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The measure of central tendency of a set of n values computed by ordering the values and taking the value at position (n+1)/2 when n is odd or the arithmetic mean of the values at positions n/2 and (n/2)+1 when n is even.",
         "usedBy": [],
         "allowedValues": []
      },
      "Member": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "Member",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A constituent part of a collection. A Member is of a one of the supported resource types and in referenced by an identifier. Details about the member are part of its respective resource description.",
         "usedBy": [
            "Collection"
         ],
         "subElements": [
            "ResourceName",
            "Description",
            "MemberID",
            "StartDate",
            "StopDate",
            "SpatialCoverage"
         ],
         "allowedValues": []
      },
      "MemberID": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "MemberID",
         "type": "ID",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The identifier of a resource.",
         "usedBy": [
            "Member"
         ],
         "allowedValues": []
      },
      "Memory": {
         "version": "2.7.1",
         "since": "2.4.0",
         "term": "Memory",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The component of your computer that allows you to store and access data on a short-term basis, typically the amount of RAM. Indicate units with standard byte scales such as KB, MB, GB, TB and PB.",
         "usedBy": [
            "ExecutionEnvironment"
         ],
         "allowedValues": []
      },
      "Mercury": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Mercury",
         "type": "Enumeration",
         "list": "Mercury",
         "element": "",
         "attributes": "",
         "definition": "The first planet from the Sun in our solar system.",
         "usedBy": [],
         "allowedValues": [
            "Magnetosphere",
            "Magnetosphere.Magnetotail",
            "Magnetosphere.Main",
            "Magnetosphere.Plasmasphere",
            "Magnetosphere.Polar",
            "Magnetosphere.RadiationBelt",
            "Magnetosphere.RingCurrent"
         ]
      },
      "Mesosphere": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Mesosphere",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The layer of the atmosphere that extends from the Stratosphere to a range of 80 km to 85 km, temperature decreasing with height.",
         "usedBy": [],
         "allowedValues": []
      },
      "MetadataContact": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "MetadataContact",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An individual who can affect a change in the metadata describing a resource.",
         "usedBy": [],
         "allowedValues": []
      },
      "MetadataRightsList": {
         "version": "2.7.1",
         "since": "2.7.1",
         "term": "MetadataRightsList",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Wrapper element to allow multiple rights for the metadata. Thus, rights properties may be listed as needed to record complex rights characteristics.",
         "usedBy": [
            "Spase"
         ],
         "subElements": [
            "Rights"
         ],
         "allowedValues": []
      },
      "MFA": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "MFA",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Magnetic Field Aligned - A coordinate system spacecraft-centered system with the z-axis in the direction of the ambient magnetic field vector. The x-axis is in the plane defined by the z-axis and the spacecraft-Sun line, positive sunward, see http://cdpp.cnes.fr/00428.pdf.",
         "usedBy": [],
         "allowedValues": []
      },
      "MHD": {
         "version": "2.7.1",
         "since": "1.3.5",
         "term": "MHD",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Hydrodynamic waves in a magnetized plasma in which the background magnetic field plays a key role in controlling the wave propagation characteristics.",
         "usedBy": [],
         "allowedValues": []
      },
      "MicrochannelPlate": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "MicrochannelPlate",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An instrument used for the detection of elementary particles, ions, ultraviolet rays and soft X-rays constructed from very thin conductive glass capillaries.",
         "usedBy": [],
         "allowedValues": []
      },
      "Microfiche": {
         "version": "2.7.1",
         "since": "2.2.0",
         "term": "Microfiche",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A sheet of microfilm on which many pages of material have been photographed. A magnification system is used to read the material.",
         "usedBy": [],
         "allowedValues": []
      },
      "Microfilm": {
         "version": "2.7.1",
         "since": "2.2.0",
         "term": "Microfilm",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Film rolls on which materials are photographed at greatly reduced size. A magnification system is used to read the material.",
         "usedBy": [],
         "allowedValues": []
      },
      "Microwave": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Microwave",
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         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Photons with a wavelength range: 10^6 nm to 1.5*10^7 nm.",
         "usedBy": [],
         "allowedValues": []
      },
      "MidLatitudeRegion": {
         "version": "2.7.1",
         "since": "2.3.1",
         "term": "MidLatitudeRegion",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "When considering the case of the Earth, the mid-latitude region typically refers to two latitudinal bands, one in the northern hemisphere and the other in the southern hemisphere extending from about 23 deg to 50 deg. The concept of mid-latitude regions does not apply to all bodies in the solar system and different latitudinal ranges would apply for each body case by case. The mid-latitude regions may be defined by using either planetographic or magnetic coordinates if the magnetic dipole is closely aligned with the spin axis of a magnetized body. Ground magnetometers located at mid-latitude on the Earth are well positioned to measure magnetic storm-time ring current variations.",
         "usedBy": [],
         "allowedValues": []
      },
      "Mimas": {
         "version": "2.7.1",
         "since": "2.2.5",
         "term": "Mimas",
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         "element": "",
         "attributes": "",
         "definition": "The smallest and least massive of the round moons of Saturn.",
         "usedBy": [],
         "allowedValues": []
      },
      "MIMEType": {
         "version": "2.7.1",
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         "attributes": "",
         "definition": "Multipurpose Internet Mail Extensions (MIME) type and sub-type which characterizes the format of a file. MIME media types are defined in RFC memorandum number 2046 (RFC 2046). Current MIME types are maintained by Internet Assigned Numbers Authority (IANA) at http://www.iana.org/assignments/media-types/index.html. Commonly used MIME types are: application/vnd.ms-powerpoint (ppt, pptx), application/vnd.ms-excel (xls, xlsx), text/richtext (rtx), application/postscript (eps, ps), application/pdf (pdf), application/xml-dtd (dtd), text/html (htm, html), text/xml (xsl, xml, xsd), application/x-dvi (dvi). If a document is compressed the specified MIME type should be for the uncompressed document.",
         "usedBy": [
            "Document"
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         "allowedValues": []
      },
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         "version": "2.7.1",
         "since": "2.2.0",
         "term": "Minimum",
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         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The smallest value of a batch or sample or the lower bound of a probability distribution.",
         "usedBy": [],
         "allowedValues": []
      },
      "MinimumElevation": {
         "version": "2.7.1",
         "since": "2.4.2",
         "term": "MinimumElevation",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The lowest vertical elevation of region above a surface (such as sea level or land) of a planet or natural satellite.",
         "usedBy": [
            "SpatialCoverage"
         ],
         "allowedValues": []
      },
      "Miranda": {
         "version": "2.7.1",
         "since": "2.2.5",
         "term": "Miranda",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The smallest and innermost round moon of Uranus.",
         "usedBy": [],
         "allowedValues": []
      },
      "MirrorURL": {
         "version": "2.7.1",
         "since": "1.3.1",
         "term": "MirrorURL",
         "type": "URL",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A Uniform Resource Locator (URL) to an alternate location of a resource.",
         "usedBy": [
            "Source"
         ],
         "allowedValues": []
      },
      "MissionManager": {
         "version": "2.7.1",
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         "term": "MissionManager",
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         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A Mission Manager is a role name used by the ESA. The Mission Manager corresponds to the Project Manager role used by NASA but the Mission Manager role only begins after the launch of the mission.",
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         "allowedValues": []
      },
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         "definition": "A parameter derived from more than one type of parameter. For example, plasma beta, the ratio of plasma particle energy density to the energy density of the magnetic field permeating the plasma, is mixed.",
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      "MixedQuantity": {
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         "definition": "A characterization of the combined attributes of a quantity.",
         "usedBy": [
            "Mixed"
         ],
         "allowedValues": [
            "AkasofuEpsilon",
            "AlfvenMachNumber",
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            "PlasmaBeta",
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         "definition": "The identifier of a modeled instrument description.",
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            "Mercury.Magnetosphere",
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            "Neptune.Magnetosphere.RadiationBelt",
            "Neptune.Magnetosphere.RingCurrent",
            "Neptune.Proteus",
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            "Pluto",
            "Rhea",
            "Saturn",
            "Saturn.Dione",
            "Saturn.Enceladus",
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            "Saturn.Iapetus",
            "Saturn.Magnetosphere",
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            "Saturn.Mimas",
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            "Saturn.Tethys",
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            "Uranus.Ariel",
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            "Uranus.Miranda",
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            "Uranus.Puck",
            "Uranus.Titania",
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            "Venus",
            "Venus.Magnetosphere",
            "Venus.Magnetosphere.Magnetotail",
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            "Model"
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         "definition": "URL pointing toward the description of a model used in the definition of a property or an input.",
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         "definition": "A group of atoms so united and combined by chemical affinity that they form a complete, integrated whole, being the smallest portion of any particular compound that can exist in a free state.",
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         "definition": "Parameters determined by integration over a distribution function convolved with a power of velocity.",
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         "definition": "A digital format for movies defined by the Motion Picture Experts Group.",
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         "definition": "Mars/Mercury Solar Orbital A coordinate system related to Mars or Mercury. A coordinate system where, depending on the body (Mars or Mercury), the x-axis is anti-sunward and the y-axis points in the orbital velocity direction.",
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         "definition": "An instrument which captures images at multiple spectral ranges.",
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         "definition": "An elementary particle similar to the electron, with an electric charge equal to -1 elementary charge, -e, and spin -1/2 h-bar with a much mass -206.7682827(46) times that of the electron rest mass, m sub e.",
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         "definition": "A spectrum with a wavelength range of centered at 589.3 nm. VSO nickname: Na-D image with a range of 588.8 nm to 589.8 nm.",
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         "definition": "The entity or group of organizations that commissioned the creation of the resource being described (see https://spase-group.org/services/naming-authority.html for more detail).",
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         "definition": "The National Center for Atmospheric Research (NCAR) format. A complete description of that standard is given in appendix C of the \"Report on Establishment & Operation of the Incoherent-Scatter Data Base\", dated 1984-08-23, obtainable from NCAR, P.O. Box 3000 Boulder, Colorado 80307-3000.",
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         "definition": "The heliospheric region near the Earth which extends to and includes the area near the L1 and L2 Lagrange point.",
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         "definition": "The gaseous and possibly ionized environment of a body extending from the surface to some specified altitude. For the Earth, this altitude is 2000 km.",
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         "definition": "The Network Common Data Form (NetCDF) supported and maintained by the Unidata Program Center. A self-describing portable data format for array-oriented data access, see http://my.unidata.ucar.edu/content/software/netcdf.",
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         "definition": "Measurements of neutral atom fluxes as a function of look direction often related to remote energetic charged particles that lose their charge through charge-exchange and then reach the detector on a line-of-sight trajectory.",
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         "definition": "An instrument which measures the quantity and properties of neutral particles. Measured properties can include mass and plasma bulk densities.",
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         "definition": "An elementary particle with neutral charge that is a constituent of atomic nuclei. Neutrons have a rest mass slightly large than that of a proton equal to about 1.67493*10^-24 kg.",
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         "element": "",
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         "element": "",
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         "definition": "A characterization of the kind of particle observed by the measurement.",
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         "definition": "Movement or effect produced by outside influence. A passive measurement is one which does not produce a transmission or excitation as a part of the measurement cycle.",
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         "definition": "A document expressed in the Portable Document Format (PDF) as defined by Adobe.",
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         "definition": "The Planetary Data System, version 4 (PDS4) standard provides guidelines on how a data producer should construct a data set suitable for long-term archiving. The standard contains a number of requirements in terms of dataset structure and documentation that should allow for any PDS compliant data set to be used and understood in the long term. Each PDS4 bundle consists of two files, one containing the data and the other an eXtensible Markup Language (XML) file containing the label. PDS4 recognises four base data structures, array, table, parse-able byte stream and encoded byte stream with arrays and tables most commonly in use. The PDS4 standard is described at: https://pds.jpl.nasa.gov/datastandards/documents/current-version.shtml. The PDS4 archiving standard has been required for data archives from NASA-funded planetary missions and for small data archives since 2011.",
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         "definition": "The number of particles per unit volume in the six-dimensional space of position and velocity.",
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         "definition": "The characteristics or categorization of an event type.",
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         "definition": "The larger and inner most moon of Mars.",
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         "definition": "The ninth-largest moon of Saturn.",
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         "definition": "The symbols and numerals required to contact an individual by telephone. The string may contain punctuation marks such as dash \"-\" or dot \".\" to separate fields within the string.",
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         "definition": "An image (positive or negative) registered on a piece of photo-sensitive paper.",
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         "term": "PhotographicPlate",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A rigid (typically glass) medium that functions like film. Its rigidity is for guarding against image distortion due to medium deformation (caused by heat and humidity). Photographic plates are often used for astronomical photography.",
         "usedBy": [],
         "allowedValues": []
      },
      "PhotoIonization": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "PhotoIonization",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Chemical process by which a neutral is ionized thanks to the energy from a photon.",
         "usedBy": [],
         "allowedValues": []
      },
      "Photometer": {
         "version": "2.7.1",
         "since": "1.2.1",
         "term": "Photometer",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An instrument which measures the strength of electromagnetic radiation within a spectral band which can range from ultraviolet to infrared and includes the visible spectrum.",
         "usedBy": [],
         "allowedValues": []
      },
      "PhotomultiplierTube": {
         "version": "2.7.1",
         "since": "2.2.3",
         "term": "PhotomultiplierTube",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A vacuum phototube that is an extremely sensitive detector of light in the ultraviolet, visible, and near-infrared ranges of the electromagnetic spectrum.",
         "usedBy": [],
         "allowedValues": []
      },
      "Photon": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Photon",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Electromagnetic waves detected by techniques that utilize their corpuscular character (e.g., CCD, CMOS, or Photomultiplier).",
         "usedBy": [],
         "allowedValues": []
      },
      "Photopolarimeter": {
         "version": "2.7.1",
         "since": "1.2.1",
         "term": "Photopolarimeter",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An instrument which measures the intensity and polarization or radiant energy. A photopolarimeter is a combination of a photometer and a polarimeter.",
         "usedBy": [],
         "allowedValues": []
      },
      "Photosphere": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Photosphere",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The atmospheric layer of the Sun or a star from which continuum radiation, especially optical, is emitted to space. For the Sun, the photosphere is about 500 km thick.",
         "usedBy": [],
         "allowedValues": []
      },
      "PIC": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "PIC",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A numerical scheme modeling ions and electrons as macroparticles.",
         "usedBy": [],
         "allowedValues": []
      },
      "PitchAngleRange": {
         "version": "2.7.1",
         "since": "2.2.9",
         "term": "PitchAngleRange",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The range of possible pitch angles for a group of particle observations.",
         "usedBy": [
            "Particle"
         ],
         "subElements": [
            "Low",
            "High",
            "Units",
            "Bin"
         ],
         "allowedValues": []
      },
      "Plane": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "Plane",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Symmetry across a plane.",
         "usedBy": [],
         "allowedValues": []
      },
      "PlaneNormalVector": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "PlaneNormalVector",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A list of the component in each dimension of the vector normal to a plane.",
         "usedBy": [
            "SpatialDescription"
         ],
         "allowedValues": []
      },
      "PlanePoint": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "PlanePoint",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A list of the component in each dimension of a point in plane.",
         "usedBy": [
            "SpatialDescription"
         ],
         "allowedValues": []
      },
      "Planet": {
         "version": "2.7.1",
         "since": "2.6.0",
         "term": "Planet",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A planet is a large, rounded astronomical body that is neither a star nor a stellar remnant. In August 2006 the International Astronomical Union (IAU) defined that in the Solar System a planet is a celestial body that satisfies the following criteria (1) is in orbit around the Sun, (2) has sufficient mass to assume hydrostatic equilibrium (a nearly round shape), and (3) has \"cleared the neighborhood\" around its orbit. This definition is still controversial to this day. Many members of the community believe that Pluto, which was demoted to the status dwarf planet, should maintain its planet status.",
         "usedBy": [],
         "allowedValues": []
      },
      "PlasmaBeta": {
         "version": "2.7.1",
         "since": "1.3.5",
         "term": "PlasmaBeta",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The ratio of the plasma pressure (nkT) to the magnetic pressure (B^2/2&mu;<sub>0</sub>) in a single component plasma or the ratio of the plasma pressure sum over i of (n<sub>i</sub>kT<sub>i</sub>) for all species i to the magnetic pressure (B^2/2&mu;<sub>0</sub>) in a multi components plasma.",
         "usedBy": [],
         "allowedValues": []
      },
      "PlasmaFrequency": {
         "version": "2.7.1",
         "since": "1.2.1",
         "term": "PlasmaFrequency",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A number density dependent characteristic frequency of a plasma.",
         "usedBy": [],
         "allowedValues": []
      },
      "Plasmagram": {
         "version": "2.7.1",
         "since": "1.3.5",
         "term": "Plasmagram",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The characterization of signal strengths in active sounding measurements as a function of virtual range or signal delay time and sounding frequency. A Plasmagram is also referred to as an Ionogram.",
         "usedBy": [],
         "allowedValues": []
      },
      "Plasmasphere": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Plasmasphere",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A region of the magnetosphere consisting of low energy (cool) plasma. It is located above the ionosphere. The outer boundary of the plasmasphere is known as the plasmapause, which is defined by an order of magnitude drop in plasma density.",
         "usedBy": [],
         "allowedValues": []
      },
      "PlasmaWaves": {
         "version": "2.7.1",
         "since": "1.3.5",
         "term": "PlasmaWaves",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Self-consistent collective oscillations of particles and fields (electric and magnetic) in a plasma.",
         "usedBy": [],
         "allowedValues": []
      },
      "Platform": {
         "version": "2.7.1",
         "since": "1.3.1",
         "term": "Platform",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A collection of components which can be positioned and oriented as a single unit. A platform may contain other platforms. For example, a spacecraft is a platform which may have components that can be articulated and are also considered platforms.",
         "usedBy": [],
         "allowedValues": []
      },
      "Pluto": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Pluto",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The ninth planet from the Sun in our solar system.",
         "usedBy": [],
         "allowedValues": []
      },
      "PNG": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "PNG",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A digital format for still images. Portable Network Graphics (PNG).",
         "usedBy": [],
         "allowedValues": []
      },
      "Polar": {
         "version": "2.7.1",
         "since": "1.1.0",
         "term": "Polar",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The region near the pole of a body. For a magnetosphere the polar region is the area where magnetic field lines are open and includes the auroral zone.",
         "usedBy": [],
         "allowedValues": []
      },
      "PolarAngle": {
         "version": "2.7.1",
         "since": "1.3.4",
         "term": "PolarAngle",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The angle between the position or measured vector and the k-axis of the coordinate system. Mathematically defined as arctan([sqrt(i^2+j^2)]/k). This term could be also applied to angles between the vector and other components, for example the IMF cone angle defined as arccos(B<sub>x</sub>/B<sub>t</sub>).",
         "usedBy": [],
         "allowedValues": []
      },
      "PolarAngleRange": {
         "version": "2.7.1",
         "since": "1.1.0",
         "term": "PolarAngleRange",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The range of possible polar angles for a group of energy observations. Defaults units are degrees.",
         "usedBy": [
            "Particle"
         ],
         "subElements": [
            "Low",
            "High",
            "Units",
            "Bin"
         ],
         "allowedValues": []
      },
      "PolarCap": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "PolarCap",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The areas of the globe surrounding the poles and consisting of the region north of 60 deg north latitude and the region south of 60 deg south latitude.",
         "usedBy": [],
         "allowedValues": []
      },
      "Polarization": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Polarization",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Direction of the electric vector of an electromagnetic wave. The wave can be linearly polarized in any direction perpendicular to the direction of travel, circularly polarized (clockwise or counterclockwise), unpolarized, or mixtures of the above.",
         "usedBy": [],
         "allowedValues": []
      },
      "Policy": {
         "version": "2.7.1",
         "since": "2.4.0",
         "term": "Policy",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A deliberate system of principles to guide decisions and achieve rational outcomes. A policy is a statement of intent, and is implemented as a procedure or protocol.",
         "usedBy": [],
         "allowedValues": []
      },
      "Population": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "Population",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A concise description of a particle population, for references.",
         "usedBy": [
            "Particle"
         ],
         "allowedValues": []
      },
      "PopulationChargeState": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "PopulationChargeState",
         "type": "Numeric",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Charge of a particle in a population, in units of the charge of a proton. Charge state of a bare proton is equal to one.",
         "usedBy": [
            "InputPopulation",
            "Particle"
         ],
         "allowedValues": []
      },
      "PopulationDensity": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "PopulationDensity",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The number of particles per unit volume.",
         "usedBy": [
            "InputPopulation"
         ],
         "allowedValues": []
      },
      "PopulationFlowSpeed": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "PopulationFlowSpeed",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The rate at which particles or energy is passing through a unit area in a unit time.",
         "usedBy": [
            "InputPopulation"
         ],
         "allowedValues": []
      },
      "PopulationMassNumber": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "PopulationMassNumber",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The total number of protons and neutrons (together known as nucleons) in an atomic nucleus.",
         "usedBy": [
            "InputPopulation",
            "Particle"
         ],
         "allowedValues": []
      },
      "PopulationTemperature": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "PopulationTemperature",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A measure of the kinetic energy of random motion with respect to the average. Temperature is properly defined only for an equilibrium particle distribution (Maxwellian distribution).",
         "usedBy": [
            "InputPopulation"
         ],
         "allowedValues": []
      },
      "Positional": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Positional",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The specification of the location of an object or measurement within a reference coordinate system. The position is usually expressed as a set of values corresponding to the location along a set of orthogonal axes together with the date/time of the observation.",
         "usedBy": [],
         "allowedValues": []
      },
      "Positron": {
         "version": "2.7.1",
         "since": "2.3.1",
         "term": "Positron",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An elementary particle that has a positive charge equal to about 1.60218*10^-19 C and a rest mass equal to about 9.10938*10^-31 kg.",
         "usedBy": [],
         "allowedValues": []
      },
      "Poster": {
         "version": "2.7.1",
         "since": "2.2.2",
         "term": "Poster",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A set of information arranged on a single page or sheet, typically in a large format.",
         "usedBy": [],
         "allowedValues": []
      },
      "Postscript": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Postscript",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A page description programming language created by Adobe Systems Inc. that is a device-independent industry standard for representing text and graphics.",
         "usedBy": [],
         "allowedValues": []
      },
      "Potential": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Potential",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The work required per unit charge to move a charge from a reference point to a point at infinity (electric potential is defined to be zero). The electric potential of a spacecraft is often referred to as the spacecraft potential. The spacecraft potential is the electric potential of the spacecraft relative to the potential of the nearby plasma. The spacecraft potential is non-zero because the spacecraft charges to the level that the emitted photoelectron flux going to infinity is balanced by the plasma electron flux to the spacecraft.",
         "usedBy": [],
         "allowedValues": []
      },
      "PowerSpectralDensity": {
         "version": "2.7.1",
         "since": "2.3.2",
         "term": "PowerSpectralDensity",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The Power Spectral Density, PSD, is the measure of signal power content versus frequency, energy, wave number, etc. A PSD is typically used to characterize broadband random signals. The amplitude of the PSD is normalized by the spectral resolution employed to digitize the signal.",
         "usedBy": [],
         "allowedValues": []
      },
      "PoyntingFlux": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "PoyntingFlux",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Electromagnetic energy flux transported by a wave characterized as the rate of energy transport per unit area per steradian.",
         "usedBy": [],
         "allowedValues": []
      },
      "Prerequisites": {
         "version": "2.7.1",
         "since": "2.4.0",
         "term": "Prerequisites",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A thing that is required to be installed on your computer in order to run or compile the software.",
         "usedBy": [
            "Software"
         ],
         "allowedValues": []
      },
      "Presentation": {
         "version": "2.7.1",
         "since": "2.2.2",
         "term": "Presentation",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A set of information that is used when communicating to an audience.",
         "usedBy": [],
         "allowedValues": []
      },
      "Pressure": {
         "version": "2.7.1",
         "since": "1.1.0",
         "term": "Pressure",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The force per unit area exerted by a particle distribution or field.",
         "usedBy": [],
         "allowedValues": []
      },
      "PrincipalInvestigator": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "PrincipalInvestigator",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An individual who is the administrative and scientific lead for an investigation.",
         "usedBy": [],
         "allowedValues": []
      },
      "Print": {
         "version": "2.7.1",
         "since": "2.2.0",
         "term": "Print",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A sheet of any written or printed material which may include notes or graphics. Multiple printed pages may be bound into a manuscript or book.",
         "usedBy": [],
         "allowedValues": []
      },
      "PriorID": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "PriorID",
         "type": "ID",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The old/replaced resource identifier for a resource that has been given a new resource identifier which otherwise has not been changed. For example, this can be used when a resource has been moved to a different naming authority.",
         "usedBy": [
            "Granule",
            "ResourceHeader"
         ],
         "allowedValues": []
      },
      "Probable": {
         "version": "2.7.1",
         "since": "1.3.4",
         "term": "Probable",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Likely given the available evidence. Considered in the range of 4 to 7 on a scale of 0 to 10.",
         "usedBy": [],
         "allowedValues": []
      },
      "ProcessCoefficient": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "ProcessCoefficient",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Coefficient associated to a chemical process.",
         "usedBy": [
            "InputProcess"
         ],
         "allowedValues": []
      },
      "ProcessCoeffType": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "ProcessCoeffType",
         "type": "Enumeration",
         "list": "ProcessCoeffType",
         "element": "",
         "attributes": "",
         "definition": "Whether the model results are obtained from a stationary solution or are dynamically computed.",
         "usedBy": [
            "InputProcess"
         ],
         "allowedValues": [
            "CrossSection",
            "Frequency",
            "Other",
            "Rate"
         ]
      },
      "ProcessingLevel": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "ProcessingLevel",
         "type": "Enumeration",
         "list": "ProcessingLevel",
         "element": "",
         "attributes": "",
         "definition": "The standard classification of the processing performed on the product.",
         "usedBy": [
            "DisplayData",
            "DisplayOutput",
            "NumericalData",
            "NumericalOutput"
         ],
         "allowedValues": [
            "Calibrated",
            "Raw",
            "Uncalibrated",
            "ValueAdded"
         ]
      },
      "ProcessModel": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "ProcessModel",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Model used to describe a chemical process.",
         "usedBy": [
            "InputProcess"
         ],
         "allowedValues": []
      },
      "ProcessType": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "ProcessType",
         "type": "Enumeration",
         "list": "ProcessType",
         "element": "",
         "attributes": "",
         "definition": "Type of chemical process.",
         "usedBy": [
            "InputProcess"
         ],
         "allowedValues": [
            "ChargeExchange",
            "DissociativeRecombination",
            "ElectronImpact",
            "PhotoIonization"
         ]
      },
      "ProductionRate": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "ProductionRate",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The number of items that can be produced during a given period of time.",
         "usedBy": [
            "InputPopulation"
         ],
         "allowedValues": []
      },
      "ProductKey": {
         "version": "2.7.1",
         "since": "2.2.2",
         "term": "ProductKey",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A string of characters used to uniquely identify a particular product within a Repository. The style or format of the identifier is determined by the Repository. The kinds of resources which can be accessed include, but are not limited to, numerical data, display data, documents and event lists. The method to access the product is determined by the attributes of an access service.",
         "usedBy": [
            "AccessURL"
         ],
         "allowedValues": []
      },
      "Profile": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Profile",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Measurements of a quantity as a function of height above an object such as the limb of a body.",
         "usedBy": [],
         "allowedValues": []
      },
      "ProgramManager": {
         "version": "2.7.1",
         "since": "2.3.2",
         "term": "ProgramManager",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An individual whose major task entails direction of program team members such that the full organization achieves the objectives and goals of a program. The Program Manager is expected to provide clear guidance and resolve conflicts and issues while maintaining focus on achieving program success.",
         "usedBy": [],
         "allowedValues": []
      },
      "ProgramScientist": {
         "version": "2.7.1",
         "since": "2.3.2",
         "term": "ProgramScientist",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A program scientist is someone who performs a range of scientific program planning duties, takes responsibility for the science content of flight mission programs or projects. A program scientist develops, reviews, and provides recommendations for proposed program requirements, expected results, budgetary estimates and also establishes methods and procedures to reduce program costs, provides expert advice to management on strategic planning and program development, develops and manages research program, and presents issues and proposes solutions to senior management.",
         "usedBy": [],
         "allowedValues": []
      },
      "Project": {
         "version": "2.7.1",
         "since": "2.3.0",
         "term": "Project",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The name of an organized activity with a stated goal or objective.",
         "usedBy": [
            "Funding"
         ],
         "allowedValues": []
      },
      "ProjectEngineer": {
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         "definition": "An engineer tasked with the full suite of responsibilities as a project undergoes the transition from the requirements derivation and preliminary design phases to controlled hardware development, assembly and environmental testing. The Project Engineer manages a team while developing the cadence of hardware manufacturing and assembly until instrument deployment and through the end of the mission.",
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         "definition": "A measure of the length of a position or measured vector as projected into a plane of the coordinate system.",
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         "definition": "An individual whose major task entails direction of project team members such that the full organization achieves the objectives and goals of the mission. The Project Manager is expected to provide clear guidance and resolve conflicts and issues while maintaining focus on achieving mission success.",
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         "element": "",
         "attributes": "",
         "definition": "An individual who is an expert in the phenomenon and related physics explored by the project. A project scientist may also have a managerial role within the project.",
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         "version": "2.7.1",
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         "element": "",
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         "definition": "Time difference between transmission and reception of a wave in an active wave experiment.",
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         "allowedValues": []
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      "Property": {
         "version": "2.7.1",
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         "term": "Property",
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         "attributes": "",
         "definition": "A container of attributes regarding the property of an application.",
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            "DisplayOutput",
            "InputParameter",
            "InputProperties",
            "NumericalOutput",
            "RegionParameter"
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            "PropertyQuantity",
            "Qualifier",
            "Units",
            "UnitsConversion",
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            "PropertyTableURL",
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            "ValidMax",
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            "ModelURL"
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      "PropertyLabel": {
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         "definition": "A string list of the labels of each dimension of the property.",
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            "Property"
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         "definition": "Model used to define a property.",
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            "Property"
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      "PropertyQuantity": {
         "version": "2.7.1",
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         "term": "PropertyQuantity",
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         "definition": "The value associated with a property.",
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            "Property"
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            "AdiabaticInvariant.BounceMotion",
            "AdiabaticInvariant.DriftMotion",
            "AdiabaticInvariant.MagneticMoment",
            "Aerosol",
            "AkasofuEpsilon",
            "Albedo",
            "AlfvenMachNumber",
            "AlfvenVelocity",
            "AlphaParticle",
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            "ArrivalDirection",
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            "AtomicNumberDetected",
            "AverageChargeState",
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            "CaK",
            "Channeltron",
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            "DoubleSphere",
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            "DustDetector",
            "DynamicPressure",
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            "ElectricField",
            "Electromagnetic",
            "Electron",
            "ElectronDriftInstrument",
            "ElectronImpact",
            "Electrostatic",
            "ElectrostaticAnalyser",
            "ElevationAngle",
            "Emissivity",
            "EnergeticParticleInstrument",
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            "FlowVelocity",
            "Fluence",
            "FluxFeedback",
            "FourierTransformSpectrograph",
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            "GeigerMuellerTube",
            "GeometricFactor",
            "Gyrofrequency",
            "Halpha",
            "HardXRays",
            "He10830",
            "He304",
            "HeatFlux",
            "Housekeeping",
            "Hydrodynamic",
            "IMFClockAngle",
            "ImageIntensity",
            "Imager",
            "ImagingSpectrometer",
            "Infrared",
            "InstrumentMode",
            "InstrumentStatus",
            "Intensity",
            "Interferometer",
            "Ion",
            "IonChamber",
            "IonComposition",
            "IonDrift",
            "IonGauge",
            "Irradiance",
            "K7699",
            "LBHBand",
            "LShell",
            "LangmuirProbe",
            "Lidar",
            "LineDepth",
            "Lines",
            "LongWire",
            "LowerHybridFrequency",
            "MHD",
            "Magnetic",
            "MagneticField",
            "Magnetogram",
            "Magnetograph",
            "Magnetometer",
            "MagnetosonicMachNumber",
            "Mass",
            "MassDensity",
            "MassNumber",
            "MassPerCharge",
            "MassSpectrometer",
            "MicrochannelPlate",
            "Microwave",
            "ModeAmplitude",
            "Molecule",
            "MultispectralImager",
            "Muon",
            "NaD",
            "NeutralAtomImager",
            "NeutralAtomImages",
            "NeutralGas",
            "NeutralParticleDetector",
            "Neutron",
            "Ni6768",
            "NumberDensity",
            "NumberFlux",
            "Optical",
            "Orientation",
            "Other",
            "ParticleCorrelator",
            "ParticleDetector",
            "ParticleRadius",
            "ParticleRigidity",
            "PhaseSpaceDensity",
            "PhotoIonization",
            "Photometer",
            "PhotomultiplierTube",
            "Photon",
            "Photopolarimeter",
            "PlasmaBeta",
            "PlasmaFrequency",
            "PlasmaWaves",
            "Platform",
            "PolarAngle",
            "Polarization",
            "Positional",
            "Positron",
            "Potential",
            "PoyntingFlux",
            "Pressure",
            "Profile",
            "PropagationTime",
            "ProportionalCounter",
            "Proton",
            "QuadrisphericalAnalyser",
            "Radar",
            "Radiance",
            "RadioFrequency",
            "Radiometer",
            "Rate",
            "Remark",
            "ResonanceSounder",
            "RetardingPotentialAnalyser",
            "Riometer",
            "RotationMatrix",
            "SPICE",
            "ScintillationDetector",
            "SearchCoil",
            "SoftXRays",
            "SolarUVFlux",
            "SolidStateDetector",
            "SonicMachNumber",
            "SoundSpeed",
            "Sounder",
            "SpacecraftPotentialControl",
            "SpatialSeries",
            "Spectra",
            "SpectralPowerReceiver",
            "Spectrometer",
            "Spectrum",
            "SpinPeriod",
            "SpinPhase",
            "SpinRate",
            "StokesParameters",
            "Telemetry",
            "Temperature",
            "Temporal",
            "ThermalPlasma",
            "ThermalSpeed",
            "TimeOfFlight",
            "TotalPressure",
            "Ultraviolet",
            "Unspecified",
            "UpperHybridFrequency",
            "VCrossB",
            "Velocity",
            "VolumeEmissionRate",
            "WavePhase",
            "WaveformReceiver",
            "Wavelength",
            "Waves",
            "Waves.Active",
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            "WebResource",
            "WebService",
            "WhiteLight",
            "XRays"
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      },
      "PropertyTableURL": {
         "version": "2.7.1",
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         "term": "PropertyTableURL",
         "type": "URL",
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         "element": "",
         "attributes": "",
         "definition": "A URL to a table containing property values.",
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            "Property"
         ],
         "allowedValues": []
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         "attributes": "",
         "definition": "A string list of the values of the property.",
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            "Property"
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      "ProportionalCounter": {
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         "since": "1.2.1",
         "term": "ProportionalCounter",
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         "element": "",
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         "definition": "An instrument which measures energy of ionization radiation based on interactions with a gas.",
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         "allowedValues": []
      },
      "Proteus": {
         "version": "2.7.1",
         "since": "2.2.5",
         "term": "Proteus",
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         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The second largest moon of Neptune.",
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         "allowedValues": []
      },
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         "element": "",
         "attributes": "",
         "definition": "An elementary particle that is a constituent of all atomic nuclei. Protons have a positive charge equal to about 1.60218*10^-19 C and a rest mass equal to about 1.67262*10^-27 kg.",
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         "allowedValues": []
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         "definition": "The source, or original provider, of the data (for example, PDS PPI).",
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            "Catalog",
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            "NumericalData"
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         "allowedValues": []
      },
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         "definition": "The provider specific information on the processing performed on the product. This should include the provider processing level designation and information about the intended use of the product. For example, if it is to be used for machine learning or other high-level applications.",
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            "DisplayData",
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         "definition": "A short textual description of a resource used by the provider which may be used to identify a resource.",
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         "attributes": "",
         "definition": "Describes the release or edition of the product used by the provider. The formation rule may vary between providers. It is intended to aid in queries to the provider regarding the product.",
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            "Catalog",
            "DisplayData",
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            "ModelRun",
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         "element": "",
         "attributes": "",
         "definition": "Similar to or having the appearance of something else. Can be used to indicate an estimation or approximation of a particular quantity.",
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         "allowedValues": []
      },
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         "element": "",
         "attributes": "",
         "definition": "The date that the work (document, data, images, DOI or other types of resources) was first issued.",
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            "PublicationInfo"
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         "definition": "Information required to mint a DOI for the resource being described in SPASE.",
         "usedBy": [
            "ResourceHeader"
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         "subElements": [
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         "attributes": "",
         "definition": "The name or the company, organization or individual that issues the work (document, data, images or other types of resources).",
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            "PublicationInfo"
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      "Publisher": {
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         "definition": "An individual, organization, institution or government department responsible for the production and dissemination of a document.",
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      "Puck": {
         "version": "2.7.1",
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         "term": "Puck",
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         "element": "",
         "attributes": "",
         "definition": "The largest inner spherical moon of Uranus.",
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         "allowedValues": []
      },
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         "type": "Item",
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         "element": "",
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         "definition": "An instrument used for the 3-D detection of plasma, energetic electrons and ions, and for positive ion composition measurements.",
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         "allowedValues": []
      },
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         "version": "2.7.1",
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         "term": "Qualifier",
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         "list": "Qualifier",
         "element": "",
         "attributes": "",
         "definition": "Characterizes the refinement to apply to a type or attribute of a quantity.",
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         "allowedValues": [
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      "Quantity": {
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         "definition": "A value that describes a characteristic of a system.",
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         "attributes": "",
         "definition": "A format for digital movies, as defined by Apple Computer, see http://developer.apple.com/quicktime/.",
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         "definition": "An instrument that uses directional properties of returned power to infer spatial and/or other characteristics of a remote object.",
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         "allowedValues": []
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      "Radiance": {
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         "definition": "A radiometric measurement that describes the amount of electromagnetic radiation that passes through or is emitted from a particular area, and falls within a given solid angle in a specified direction. They are used to characterize both emission from diffuse sources and reflection from diffuse surfaces.",
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         "allowedValues": []
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         "element": "",
         "attributes": "",
         "definition": "The region within a magnetosphere where high-energy particles could potentially be trapped in a magnetic field.",
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         "allowedValues": []
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         "element": "",
         "attributes": "",
         "definition": "Emissions of the Sun in radio wavelengths from centimeters to dekameters, under both quiet and disturbed conditions. Radio Bursts can be Type I consisting of many short, narrow-band bursts in the metric range (80 MHz to 200 MHz). Type II consisting of narrow-band emission that begins in the meter range (150 MHz) and sweeps slowly (tens of minutes) toward dekameter wavelengths (20 MHz). Type III consisting of narrow-band bursts that sweep rapidly (seconds) from decimeter to dekameter wavelengths (500 MHz to 20 MHz) and Type IV consisting of a smooth continuum of broadband bursts primarily in the meter range (10 MHz to 200 MHz).",
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         "definition": "Photons with a wavelength range: 10^5 nm to 10^11 nm.",
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         "element": "",
         "attributes": "",
         "definition": "An instrument for detecting or measuring radiant energy. Radiometers are commonly limited to infrared radiation.",
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      },
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         "version": "2.7.1",
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         "element": "",
         "attributes": "",
         "definition": "The length of a line segment from a center point to the perimeter.",
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         "element": "",
         "attributes": "",
         "definition": "Reaction rate: reaction production per unit of time.",
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         "attributes": "",
         "definition": "The relative magnitudes of two quantities.",
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         "element": "",
         "attributes": "",
         "definition": "Data in its original state with no processing to account for calibration. Similar to NASA Level 0.",
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         "version": "2.7.1",
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         "element": "",
         "attributes": "",
         "definition": "Any number z can in general be represented by its complex form with z= a+ib where i, which is defined as the square root of -1, signifies the imaginary component of the number z. The coefficient a is called the real part of the complex number z.",
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         "term": "Region",
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         "attributes": "",
         "definition": "The most general/highest level list of locations of interest in the context of heliophysics. The list contains the names of the planets found in the solar system, the Sun, the Heliosphere, Interstellar, and two catch all terms: Asteroid and Comet.",
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         "allowedValues": [
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         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A container of objects that comply with the Amazon Simple Storage Service (S3) specifications. A bucket has a unique, user-assigned key (name). A bucket can contain any number of objects with an aggregate size of 5 gigabytes. A bucket may be accompanied by up to 2 kilobytes of metadata.",
         "usedBy": [],
         "allowedValues": []
      },
      "Saturn": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Saturn",
         "type": "Enumeration",
         "list": "Saturn",
         "element": "",
         "attributes": "",
         "definition": "The sixth planet from the Sun in our solar system.",
         "usedBy": [],
         "allowedValues": [
            "Dione",
            "Enceladus",
            "Hyperion",
            "Iapetus",
            "Magnetosphere",
            "Magnetosphere.Magnetotail",
            "Magnetosphere.Main",
            "Magnetosphere.Plasmasphere",
            "Magnetosphere.Polar",
            "Magnetosphere.RadiationBelt",
            "Magnetosphere.RingCurrent",
            "Mimas",
            "Phoebe",
            "Rhea",
            "Tethys",
            "Titan"
         ]
      },
      "SavedQuantity": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "SavedQuantity",
         "type": "Enumeration",
         "list": "SavedQuantity",
         "element": "",
         "attributes": "",
         "definition": "Quantities that are saved during a given diagnosis.",
         "usedBy": [
            "DiagnosisTimeStep"
         ],
         "allowedValues": [
            "2DCuts",
            "3DCubes",
            "ACElectricField",
            "ACMagneticField",
            "Absorption",
            "AdiabaticInvariant",
            "AdiabaticInvariant.BounceMotion",
            "AdiabaticInvariant.DriftMotion",
            "AdiabaticInvariant.MagneticMoment",
            "AkasofuEpsilon",
            "Albedo",
            "AlfvenMachNumber",
            "AlfvenVelocity",
            "ArrivalDirection",
            "AtomicNumberDetected",
            "AverageChargeState",
            "ChargeFlux",
            "ChargeState",
            "CountRate",
            "Counts",
            "Current",
            "CurrentDensity",
            "DopplerFrequency",
            "DynamicPressure",
            "Electric",
            "Electromagnetic",
            "Emissivity",
            "Energy",
            "EnergyDensity",
            "EnergyFlux",
            "EnergyPerCharge",
            "Entropy",
            "EquivalentWidth",
            "FlowSpeed",
            "FlowVelocity",
            "Fluence",
            "Frequency",
            "FrequencyToGyrofrequencyRatio",
            "GeometricFactor",
            "Gyrofrequency",
            "HeatFlux",
            "IMFClockAngle",
            "Intensity",
            "LShell",
            "LineDepth",
            "Lines",
            "LowerHybridFrequency",
            "Magnetic",
            "MagneticField",
            "MagnetosonicMachNumber",
            "Mass",
            "MassDensity",
            "MassNumber",
            "MassPerCharge",
            "ModeAmplitude",
            "NumberDensity",
            "NumberFlux",
            "Other",
            "ParticleRadius",
            "ParticleRigidity",
            "PhaseSpaceDensity",
            "PlasmaBeta",
            "PlasmaFrequency",
            "Polarization",
            "Potential",
            "PoyntingFlux",
            "Pressure",
            "PropagationTime",
            "SolarUVFlux",
            "SonicMachNumber",
            "SoundSpeed",
            "SpatialSeries",
            "Spectra",
            "StokesParameters",
            "Temperature",
            "ThermalSpeed",
            "TotalPressure",
            "UpperHybridFrequency",
            "VCrossB",
            "Velocity",
            "VolumeEmissionRate",
            "WavePhase",
            "Wavelength"
         ]
      },
      "SC": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "SC",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Spacecraft - A coordinate system defined by the spacecraft geometry and/or spin. Often has z-axis parallel to spacecraft spin vector. The x-axis and y-axis may or may not corotate with the spacecraft, see SR and SR2 below.",
         "usedBy": [],
         "allowedValues": []
      },
      "Scalar": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Scalar",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A quantity that is completely specified by its magnitude and has no direction.",
         "usedBy": [],
         "allowedValues": []
      },
      "ScaleMax": {
         "version": "2.7.1",
         "since": "1.3.1",
         "term": "ScaleMax",
         "type": "Numeric",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The maximum value that the variable is expected to attain. Used, for example, by automated plotting software.",
         "usedBy": [
            "RenderingHints"
         ],
         "allowedValues": []
      },
      "ScaleMin": {
         "version": "2.7.1",
         "since": "1.3.1",
         "term": "ScaleMin",
         "type": "Numeric",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The minimum value that the variable is expected to attain. Used, for example, by automated plotting software.",
         "usedBy": [
            "RenderingHints"
         ],
         "allowedValues": []
      },
      "ScaleType": {
         "version": "2.7.1",
         "since": "1.3.1",
         "term": "ScaleType",
         "type": "Enumeration",
         "list": "ScaleType",
         "element": "",
         "attributes": "",
         "definition": "The scaling to apply to an axis. If this attribute is not present, linear scale should be assumed.",
         "usedBy": [
            "RenderingHints"
         ],
         "allowedValues": [
            "LinearScale",
            "LogScale"
         ]
      },
      "SchemeURI": {
         "version": "2.7.1",
         "since": "2.7.0",
         "term": "SchemeURI",
         "type": "URL",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Rights URL namespace. Text value should be 'https://spdx.org/licenses/'.",
         "usedBy": [
            "Rights"
         ],
         "allowedValues": []
      },
      "Scientist": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Scientist",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An individual who is an expert in the phenomenon and related physics represented by the resource.",
         "usedBy": [],
         "allowedValues": []
      },
      "ScintillationDetector": {
         "version": "2.7.1",
         "since": "1.2.1",
         "term": "ScintillationDetector",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An instrument which detects fluorescence of a material which is excited by high-energy (ionizing) electromagnetic or charged particle radiation.",
         "usedBy": [],
         "allowedValues": []
      },
      "SE": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "SE",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Solar Ecliptic - A heliocentric coordinate system where the z-axis is normal to the ecliptic plane, positive northward. The x-axis is positive towards the first point of Aries (from Earth to Sun at vernal equinox). Same as HAE above, see http://nssdc.gsfc.nasa.gov/space/helios/coor_des.htmlr.",
         "usedBy": [],
         "allowedValues": []
      },
      "Search": {
         "version": "2.7.1",
         "since": "2.3.0",
         "term": "Search",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A web search interface that requires additional input.",
         "usedBy": [],
         "allowedValues": []
      },
      "SearchCoil": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "SearchCoil",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An instrument which measures the time variation of the magnetic flux threading a loop by measurement of the electric potential difference induced between the ends of the wire.",
         "usedBy": [],
         "allowedValues": []
      },
      "SectorBoundaryCrossing": {
         "version": "2.7.1",
         "since": "2.2.2",
         "term": "SectorBoundaryCrossing",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A sector boundary crossing is a transit by a spacecraft across the heliospheric current sheet separating the dominantly outward (away from the Sun) interplanetary magnetic field of one hemisphere of the heliosphere from the dominantly inward (towards the Sun) polarity of the other hemisphere. Such crossings have multi-day intervals of opposite IMF dominant polarities on either side.",
         "usedBy": [],
         "allowedValues": []
      },
      "SensorCoordinates": {
         "version": "2.7.1",
         "since": "2.6.1",
         "term": "SensorCoordinates",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A coordinate system defined by the instrument or measuring geometry.",
         "usedBy": [],
         "allowedValues": []
      },
      "Service": {
         "version": "2.7.1",
         "since": "1.1.0",
         "term": "Service",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A location or facility that can perform a well-defined task.",
         "usedBy": [
            "Spase"
         ],
         "subElements": [
            "ResourceID",
            "NamingAuthority",
            "ResourceType",
            "ResourceHeader",
            "AccessURL",
            "Extension"
         ],
         "allowedValues": []
      },
      "Set": {
         "version": "2.7.1",
         "since": "1.3.0",
         "term": "Set",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A collection of items for a particular purpose.",
         "usedBy": [
            "InputField",
            "InputPopulation",
            "InputProcess",
            "Parameter"
         ],
         "allowedValues": []
      },
      "SHA1": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "SHA1",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Secure Hash Algorithm (SHA), a 160-bit message digest algorithm developed by the NSA and described in Federal Information Processing Standard (FIPS) publication 180-1.",
         "usedBy": [],
         "allowedValues": []
      },
      "SHA256": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "SHA256",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Secure Hash Algorithm (SHA), a 256-bit message digest algorithm developed by the NSA and described in Federal Information Processing Standard (FIPS) publication 180-1.",
         "usedBy": [],
         "allowedValues": []
      },
      "SideWall": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "SideWall",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Side walls of the model domain.",
         "usedBy": [
            "ElementBoundary"
         ],
         "allowedValues": []
      },
      "Size": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Size",
         "type": "Sequence",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The number of elements in each dimension of a multi-dimensional array. A scalar has a size of 1. A multi-dimensional vector will have a size for each dimension. Note that the number of elements in the size of an N-dimensional array conveys array dimensionality while the product of those numbers conveys the total number of elements in the array. When size is used to describe a tensor, it is the number of elements in the tensor. As such it has a limited set of values. A tensor of rank 1 has a size of 3, rank 2 a size of 9, rank 3 a size of 27 and rank n a size of 3^n.",
         "usedBy": [
            "Structure"
         ],
         "allowedValues": []
      },
      "SM": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "SM",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Solar Magnetic - A geocentric coordinate system where the z-axis is northward along dipole axis of the Earth, x-axis is in plane of z-axis and Earth-Sun line, positive sunward, see Russell, 1971.",
         "usedBy": [],
         "allowedValues": []
      },
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         "version": "2.7.1",
         "since": "2.4.0",
         "term": "Software",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An application which can be installed, built or readily used.",
         "usedBy": [
            "Spase"
         ],
         "subElements": [
            "ResourceID",
            "NamingAuthority",
            "ResourceType",
            "ResourceHeader",
            "AccessInformation",
            "SoftwareVersion",
            "ApplicationInterface",
            "CodeLanguage",
            "Prerequisites",
            "ExecutionEnvironment",
            "InputProperty",
            "OutputProperty"
         ],
         "allowedValues": []
      },
      "SoftwareVersion": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "SoftwareVersion",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Describes the edition of the software release. The formation rule for the version may vary between software packages. It is intended to aid in queries to the software provider regarding the software.",
         "usedBy": [
            "Software"
         ],
         "allowedValues": []
      },
      "SoftXRays": {
         "version": "2.7.1",
         "since": "1.3.5",
         "term": "SoftXRays",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "X-Rays with an energy range of 0.12 keV to 12 keV.",
         "usedBy": [],
         "allowedValues": []
      },
      "SolarFlare": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "SolarFlare",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An explosive event in the solar atmosphere which produces electromagnetic radiation across the electromagnetic spectrum at multiple wavelengths from long-wave radio to the shortest wavelength gamma rays.",
         "usedBy": [],
         "allowedValues": []
      },
      "SolarUVFlux": {
         "version": "2.7.1",
         "since": "2.2.4",
         "term": "SolarUVFlux",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The amount of ultraviolet energy originating from the Sun passing through a unit area in a unit time.",
         "usedBy": [],
         "allowedValues": []
      },
      "SolarWindExtreme": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "SolarWindExtreme",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Intervals of unusually large or small values of solar wind attributes such as flow speed and ion density.",
         "usedBy": [],
         "allowedValues": []
      },
      "SolidAngle": {
         "version": "2.7.1",
         "since": "1.3.6",
         "term": "SolidAngle",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Integration over the angle in 3-D space that an object subtends at a point.",
         "usedBy": [],
         "allowedValues": []
      },
      "SolidStateDetector": {
         "version": "2.7.1",
         "since": "2.2.3",
         "term": "SolidStateDetector",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A detector of the charge carriers (electrons and holes) generated in semiconductors by energy deposited by gamma ray photons. Also known as a semiconductor detector\".",
         "usedBy": [],
         "allowedValues": []
      },
      "SonicMachNumber": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "SonicMachNumber",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The ratio of the bulk flow speed to the speed of sound in the medium.",
         "usedBy": [],
         "allowedValues": []
      },
      "Sounder": {
         "version": "2.7.1",
         "since": "1.2.1",
         "term": "Sounder",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An instrument which measures the radiances from an object. A sounder may measure radiances at multiple spectral ranges.",
         "usedBy": [],
         "allowedValues": []
      },
      "SoundSpeed": {
         "version": "2.7.1",
         "since": "2.0.1",
         "term": "SoundSpeed",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The speed at which sound travels through a medium.",
         "usedBy": [],
         "allowedValues": []
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      "Source": {
         "version": "2.7.1",
         "since": "1.3.1",
         "term": "Source",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The location and attributes of an object.",
         "usedBy": [
            "Granule"
         ],
         "subElements": [
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            "URL",
            "MirrorURL",
            "Checksum",
            "DataExtent"
         ],
         "allowedValues": []
      },
      "SourceRegion": {
         "version": "2.7.1",
         "since": "2.6.1",
         "term": "SourceRegion",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The apparent region of space from which a particular type of observed electromagnetic or particle radiation appears to have originated.",
         "usedBy": [
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            "Wave"
         ],
         "allowedValues": []
      },
      "SourceRegionExtent": {
         "version": "2.7.1",
         "since": "2.6.1",
         "term": "SourceRegionExtent",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The observational size of a remote source of radiation (electromagnetic waves or particles). It is typically expressed in angular width (full or half width), or in solid angle, subtended at the observing point. SourceRegionExtent should be accompanied by the description of source direction (see Direction under Qualifier).",
         "usedBy": [
            "Particle",
            "Wave"
         ],
         "allowedValues": []
      },
      "SourceType": {
         "version": "2.7.1",
         "since": "1.3.1",
         "term": "SourceType",
         "type": "Enumeration",
         "list": "SourceType",
         "element": "",
         "attributes": "",
         "definition": "A characterization of the function or purpose of the source.",
         "usedBy": [
            "Source"
         ],
         "allowedValues": [
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            "Browse",
            "Data",
            "Layout",
            "Thumbnail"
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      },
      "SouthAtlanticAnomalyRegion": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "SouthAtlanticAnomalyRegion",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The region where the inner Van Allen radiation belt makes its closest approach to the surface of the Earth. The result is that, for a given altitude, the radiation intensity is higher over this region than elsewhere.",
         "usedBy": [],
         "allowedValues": []
      },
      "SouthernmostLatitude": {
         "version": "2.7.1",
         "since": "2.4.2",
         "term": "SouthernmostLatitude",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The latitude furthest to the south in a geographic coordinate system.",
         "usedBy": [
            "SpatialCoverage"
         ],
         "allowedValues": []
      },
      "SpacecraftOrbitPlane": {
         "version": "2.7.1",
         "since": "1.2.1",
         "term": "SpacecraftOrbitPlane",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A coordinate system where x-axis lies in the plane normal to and in the direction of motion of the spacecraft, the z-axis is normal to this plane and the y-axis completes the triad to form a right-handed coordinate system.",
         "usedBy": [],
         "allowedValues": []
      },
      "SpacecraftPotentialControl": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "SpacecraftPotentialControl",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An instrument to control the electric potential of a spacecraft with respect to the ambient plasma by emitting a variable current of positive ions.",
         "usedBy": [],
         "allowedValues": []
      },
      "Spase": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Spase",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Space Physics Archive Search and Extract (SPASE). The outermost container or envelope for SPASE metadata. This indicates the start of the SPASE metadata.",
         "usedBy": [],
         "subElements": [
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            "Status",
            "MetadataRightsList",
            "Catalog",
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            "NumericalData",
            "Granule",
            "Instrument",
            "Observatory",
            "Person",
            "Registry",
            "Repository",
            "Service",
            "Annotation",
            "Document",
            "Software",
            "Collection",
            "Model",
            "ModelRun",
            "DisplayOutput",
            "NumericalOutput"
         ],
         "allowedValues": []
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      "SpatialCoverage": {
         "version": "2.7.1",
         "since": "2.4.2",
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         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A region of space defined by the latitude, longitude and altitude in a geographic coordinate system.",
         "usedBy": [
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            "Granule",
            "Member",
            "NumericalData",
            "Parameter"
         ],
         "subElements": [
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            "SouthernmostLatitude",
            "CenterLongitude",
            "EasternmostLongitude",
            "WesternmostLongitude",
            "CenterElevation",
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            "MaximumElevation",
            "Acknowledgement",
            "Description"
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         "allowedValues": []
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         "since": "2.5.0",
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         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A characterization of the spatial extent over which the measurement was taken.",
         "usedBy": [
            "DisplayOutput",
            "Model",
            "NumericalOutput"
         ],
         "subElements": [
            "Dimension",
            "CoordinateSystem",
            "Units",
            "UnitsConversion",
            "CoordinatesLabel",
            "CutsDescription",
            "CubesDescription",
            "PlaneNormalVector",
            "PlanePoint",
            "RegionBegin",
            "RegionEnd",
            "Step"
         ],
         "allowedValues": []
      },
      "SpatialDimension": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "SpatialDimension",
         "type": "Count",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Number of spatial dimensions in the model domain.",
         "usedBy": [
            "ModelDomain"
         ],
         "allowedValues": []
      },
      "SpatialSeries": {
         "version": "2.7.1",
         "since": "2.6.0",
         "term": "SpatialSeries",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A set of 3-D arrays that contain the values of physical parameters, i.e., magnetic field vectors, particle densities, temperatures, etc., at grid points in a spacial volume.",
         "usedBy": [],
         "allowedValues": []
      },
      "Specification": {
         "version": "2.7.1",
         "since": "2.2.2",
         "term": "Specification",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A detailed description of the requirements and other aspects of an object or component that may be used to develop an implementation.",
         "usedBy": [],
         "allowedValues": []
      },
      "SpecificModeledRegion": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "SpecificModeledRegion",
         "type": "Enumeration",
         "list": "SpecificModeledRegion",
         "element": "",
         "attributes": "",
         "definition": "Identifiers for areas of the physical world which may be occupied or observed.",
         "usedBy": [],
         "allowedValues": [
            "Callisto",
            "Enceladus",
            "Europa",
            "Ganymede",
            "Incident",
            "Io",
            "Planet",
            "Rhea",
            "Titan",
            "Title"
         ]
      },
      "Spectra": {
         "version": "2.7.1",
         "since": "2.6.0",
         "term": "Spectra",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A term that applies to any signal that can be measured or decomposed along a continuous variable such as the electromagnetic radiation which can be decomposed as a function of wavelength or frequency.",
         "usedBy": [],
         "allowedValues": []
      },
      "Spectral": {
         "version": "2.7.1",
         "since": "1.3.6",
         "term": "Spectral",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Characterized as a range or continuum of frequencies.",
         "usedBy": [],
         "allowedValues": []
      },
      "SpectralPowerReceiver": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "SpectralPowerReceiver",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A radio receiver which determines the power spectral density of the electric or magnetic field, or both, at one or more frequencies.",
         "usedBy": [],
         "allowedValues": []
      },
      "SpectralRange": {
         "version": "2.7.1",
         "since": "1.1.0",
         "term": "SpectralRange",
         "type": "Enumeration",
         "list": "SpectralRange",
         "element": "",
         "attributes": "",
         "definition": "The general term used to describe wavelengths or frequencies within a given span of values for those quantities.",
         "usedBy": [
            "DisplayData",
            "DisplayOutput",
            "FrequencyRange",
            "NumericalData",
            "NumericalOutput",
            "WavelengthRange"
         ],
         "allowedValues": [
            "CaK",
            "ExtremeUltraviolet",
            "FarUltraviolet",
            "GammaRays",
            "Halpha",
            "HardXRays",
            "He10830",
            "He304",
            "Infrared",
            "K7699",
            "LBHBand",
            "Microwave",
            "NaD",
            "Ni6768",
            "Optical",
            "RadioFrequency",
            "SoftXRays",
            "Ultraviolet",
            "WhiteLight",
            "XRays"
         ]
      },
      "Spectrogram": {
         "version": "2.7.1",
         "since": "1.3.5",
         "term": "Spectrogram",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The characterization of signal strengths as a function of frequency (or energy) and time.",
         "usedBy": [],
         "allowedValues": []
      },
      "Spectrometer": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Spectrometer",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An instrument that measures the component wavelengths of light (or other electromagnetic radiation) by splitting the light up into its component wavelengths.",
         "usedBy": [],
         "allowedValues": []
      },
      "Spectrum": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Spectrum",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The distribution of a characteristic of a physical system or phenomenon, such as the energy emitted by a radiant source, arranged in the order of wavelengths.",
         "usedBy": [],
         "allowedValues": []
      },
      "Spherical": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Spherical",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A coordinate representation of a position vector or of a measured vector by its magnitude and two direction angles. The angles are relative to the base axes of the coordinate system used. Typically, the angles are phi [azimuth angle, =arctan (j/i)] and theta, where theta may be a polar angle, arctan {[sqrt(i^2+j^2)]/k}, or an elevation angle, arctan [k/sqrt(i^2+j^2)].",
         "usedBy": [],
         "allowedValues": []
      },
      "SPICE": {
         "version": "2.7.1",
         "since": "2.3.2",
         "term": "SPICE",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "SPICE is an ancillary information system that provides scientists and engineers the capability to include space geometry and event data into mission design, science observation planning, and science data analysis software. The staff of the NASA Navigation and Ancillary Information Facility, NAIF, which is located at JPL provides SPICE support for planetary, heliophysics, and Earth science missions, see https://naif.jpl.nasa.gov/naif/index.html. This SPICE has been adapted from text on NAF hosted web pages.",
         "usedBy": [],
         "allowedValues": []
      },
      "SpinPeriod": {
         "version": "2.7.1",
         "since": "2.3.1",
         "term": "SpinPeriod",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The time required for an object such as a spacecraft or planet to perform one full rotation in a given frame of reference.",
         "usedBy": [],
         "allowedValues": []
      },
      "SpinPhase": {
         "version": "2.7.1",
         "since": "2.3.1",
         "term": "SpinPhase",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An angular based or normalized parameter that specifies the spin state of an object such as a spacecraft or planet in a specific coordinate system usually together with the date/time of the observation.",
         "usedBy": [],
         "allowedValues": []
      },
      "SpinRate": {
         "version": "2.7.1",
         "since": "2.3.1",
         "term": "SpinRate",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The angular rate of change of the spin angle of an object such as a spacecraft or planet.",
         "usedBy": [],
         "allowedValues": []
      },
      "SR": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "SR",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Spin Reference - A special case of a Spacecraft (SC) coordinate system for a spinning spacecraft. The z-axis is parallel to the spacecraft spin vector. The x-axis and y-axis rotate with the spacecraft, see http://cdpp.cnes.fr/00428.pdf.",
         "usedBy": [],
         "allowedValues": []
      },
      "SR2": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "SR2",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Spin Reference 2 - A special case of a Spacecraft (SC) coordinate system for a spinning spacecraft. The z-axis is parallel to the spacecraft spin vector while the x-axis is in the plane defined by the z-axis and the spacecraft-Sun line, positive sunward, see http://cdpp.cnes.fr/00428.pdf.",
         "usedBy": [],
         "allowedValues": []
      },
      "SSE": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "SSE",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Spacecraft Solar Ecliptic - A coordinate system used for deep space spacecraft, i.e., consider the Helios spacecraft with the x-axis from spacecraft to Sun, the z-axis normal to ecliptic plane positive northward. Note that the angle between the normal to ecliptic plane and the normal to the Helios orbital plane is ~0.25 deg.",
         "usedBy": [],
         "allowedValues": []
      },
      "SSE_L": {
         "version": "2.7.1",
         "since": "2.2.0",
         "term": "SSE_L",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Selenocentric Solar Ecliptic - The x-axis points from the center of the Moon to the Sun, the z-axis is normal to the ecliptic plane, positive northward. And the y-axis completes the right-handed set of axes.",
         "usedBy": [],
         "allowedValues": []
      },
      "StackPlot": {
         "version": "2.7.1",
         "since": "1.3.1",
         "term": "StackPlot",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A representation of data showing multiple sets of observations on a single plot, possibly offsetting each plot by some uniform amount.",
         "usedBy": [],
         "allowedValues": []
      },
      "StandardDeviation": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "StandardDeviation",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The square root of the average of the squares of deviations about the mean of a set of data. Standard deviation is a statistical measure of spread or variability.",
         "usedBy": [],
         "allowedValues": []
      },
      "StartDate": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "StartDate",
         "type": "DateTime",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The specification of a starting point in time.",
         "usedBy": [
            "Contact",
            "Granule",
            "Member",
            "OperatingSpan",
            "TimeSpan"
         ],
         "allowedValues": []
      },
      "StartLocation": {
         "version": "2.7.1",
         "since": "1.3.6",
         "term": "StartLocation",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The initial position in space.",
         "usedBy": [
            "ObservationExtent"
         ],
         "allowedValues": []
      },
      "Status": {
         "version": "2.7.1",
         "since": "2.7.1",
         "term": "Status",
         "type": "Enumeration",
         "list": "Status",
         "element": "",
         "attributes": "",
         "definition": "Indicates the status of the resource.",
         "usedBy": [
            "Spase"
         ],
         "allowedValues": [
            "Completed",
            "Deprecated",
            "Ongoing",
            "Unavailable",
            "Withdrawn"
         ]
      },
      "Step": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "Step",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Spatial step between two elements of the diagnosis.",
         "usedBy": [
            "SpatialDescription"
         ],
         "allowedValues": []
      },
      "StokesParameters": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "StokesParameters",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A set of four parameters (usually called I,Q, U and V) which describe the polarization state of an electromagnetic wave propagating through space.",
         "usedBy": [],
         "allowedValues": []
      },
      "StonyhurstHeliographic": {
         "version": "2.7.1",
         "since": "2.6.1",
         "term": "StonyhurstHeliographic",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The origin of the Stonyhurst heliographic coordinate system is at the intersection of the solar equator and the central meridian as seen from Earth. Thus, the coordinate system remains fixed with respect to Earth, while the Sun rotates (synodically) underneath it. The latitude and longitude angles, theta and phi, respectively, are given in degrees, with theta increasing towards solar North, and phi increasing towards the solar West limb. The distance r is either a physical distance in meters, or is relative to the solar photospheric radius R approximately equal to 6.96 x 10^8 m. This coordinate system is demonstrated in An alternative to the r coordinate is the height h = r - R relative to the solar surface, where h is positive above the surface and negative below the surface.",
         "usedBy": [],
         "allowedValues": []
      },
      "StopDate": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "StopDate",
         "type": "DateTime",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The specification of a stopping point in time.",
         "usedBy": [
            "Contact",
            "Granule",
            "Member",
            "OperatingSpan",
            "TimeSpan"
         ],
         "allowedValues": []
      },
      "StopLocation": {
         "version": "2.7.1",
         "since": "1.3.6",
         "term": "StopLocation",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The final position in space.",
         "usedBy": [
            "ObservationExtent"
         ],
         "allowedValues": []
      },
      "Storage": {
         "version": "2.7.1",
         "since": "2.4.0",
         "term": "Storage",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The component of your computer that allows you to store and access data on a long-term basis. Indicate units with standard byte scales such as KB, MB, GB, TB and PB.",
         "usedBy": [
            "ExecutionEnvironment"
         ],
         "allowedValues": []
      },
      "Strahl": {
         "version": "2.7.1",
         "since": "2.2.1",
         "term": "Strahl",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A distribution of particles concentrated in a narrow energy band. The band may be may be aligned with a secondary feature. For example, it may occur in a narrow cone aligned with the mean magnetic field direction.",
         "usedBy": [],
         "allowedValues": []
      },
      "Stratosphere": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Stratosphere",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The layer of the atmosphere that extends from the troposphere to about 30 km, temperature increases with height. The stratosphere contains the ozone layer.",
         "usedBy": [],
         "allowedValues": []
      },
      "StreamInteractionRegion": {
         "version": "2.7.1",
         "since": "2.0.2",
         "term": "StreamInteractionRegion",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The region where two solar wind streams, typically having differing characteristics and solar sources, abut up against (and possibly partially interpenetrate) each other. The abbreviation SIR is commonly used in place of Stream Interaction Region.",
         "usedBy": [],
         "allowedValues": []
      },
      "Strong": {
         "version": "2.7.1",
         "since": "1.3.4",
         "term": "Strong",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Highly likely given the available evidence. Considered in the range of 7 to 10 on a scale of 0 to 10.",
         "usedBy": [],
         "allowedValues": []
      },
      "Structure": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Structure",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The organization and relationship of individual values within a quantity.",
         "usedBy": [
            "Parameter"
         ],
         "subElements": [
            "Size",
            "Description",
            "Element"
         ],
         "allowedValues": []
      },
      "Style": {
         "version": "2.7.1",
         "since": "2.3.0",
         "term": "Style",
         "type": "Enumeration",
         "list": "Style",
         "element": "",
         "attributes": "",
         "definition": "The manner or protocol with which resources can be accessed.",
         "usedBy": [
            "AccessURL"
         ],
         "allowedValues": [
            "EPNTAP",
            "File",
            "Git",
            "HAPI",
            "Listing",
            "Overview",
            "Search",
            "TAP",
            "Template",
            "WebService"
         ]
      },
      "SubAuroralRegion": {
         "version": "2.7.1",
         "since": "2.3.1",
         "term": "SubAuroralRegion",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "When considering the case of the Earth, the sub-auroral region typically refers to two latitudinal bands, one in the northern hemisphere and the other in the southern hemisphere extending from about 50 deg to low 60 deg latitude. The concept sub-auroral regions does not apply to all bodies in the solar system and different latitudinal ranges would apply for each body case by case. The sub-auroral regions may be defined by using either planetographic or magnetic coordinates if the magnetic dipole is closely aligned with the spin axis of a magnetized body. Ground magnetometers located at sub-auroral latitudes on the Earth measure a mixture of activity driven by auroral zone currents and the ring current.",
         "usedBy": [],
         "allowedValues": []
      },
      "SubLongitude": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "SubLongitude",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The longitude on the surface of an object which is directly below another object.",
         "usedBy": [
            "RegionParameter"
         ],
         "allowedValues": []
      },
      "Substorm": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Substorm",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A process by which plasma in the magnetotail becomes energized at a fast rate.",
         "usedBy": [],
         "allowedValues": []
      },
      "Sun": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Sun",
         "type": "Enumeration",
         "list": "Sun",
         "element": "",
         "attributes": "",
         "definition": "The star upon which our solar system is centered.",
         "usedBy": [],
         "allowedValues": [
            "Chromosphere",
            "Corona",
            "Interior",
            "Photosphere",
            "TransitionRegion"
         ]
      },
      "Superhalo": {
         "version": "2.7.1",
         "since": "2.2.1",
         "term": "Superhalo",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The part of an object or distribution surrounding some central body or distribution evident in a second break in the distribution function (e.g., a different power law). It consists of a population with energies higher than that of coexisting halo population.",
         "usedBy": [],
         "allowedValues": []
      },
      "SupersededBy": {
         "version": "2.7.1",
         "since": "2.7.1",
         "term": "SupersededBy",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Used to indicate that the current resource description has been replaced by another. The ResourceID of the replacement resource should be listed as the AssociationID.",
         "usedBy": [],
         "allowedValues": []
      },
      "Supersedes": {
         "version": "2.7.1",
         "since": "2.7.1",
         "term": "Supersedes",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Used to indicate that the current resource description replaces another. The ResourceID of the replaced resource should be listed as the AssociationID.",
         "usedBy": [],
         "allowedValues": []
      },
      "Support": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Support",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Information useful in understanding the context of an observation, typically observed or measured coincidentally with a physical observation.",
         "usedBy": [
            "Parameter"
         ],
         "subElements": [
            "Qualifier",
            "SupportQuantity"
         ],
         "allowedValues": []
      },
      "SupportQuantity": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "SupportQuantity",
         "type": "Enumeration",
         "list": "SupportQuantity",
         "element": "",
         "attributes": "",
         "definition": "A characterization of the support information.",
         "usedBy": [
            "Support"
         ],
         "allowedValues": [
            "DataQuality",
            "Housekeeping",
            "InstrumentMode",
            "Orientation",
            "Other",
            "Positional",
            "Remark",
            "RotationMatrix",
            "SpinPeriod",
            "SpinPhase",
            "SpinRate",
            "Telemetry",
            "Temporal",
            "Velocity",
            "WebResource",
            "WebService"
         ]
      },
      "Surface": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Surface",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The outermost area of a solid object.",
         "usedBy": [],
         "allowedValues": []
      },
      "Symmetric": {
         "version": "2.7.1",
         "since": "1.3.1",
         "term": "Symmetric",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Equal distribution about one or more axes.",
         "usedBy": [],
         "allowedValues": []
      },
      "Symmetry": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "Symmetry",
         "type": "Enumeration",
         "list": "Symmetry",
         "element": "",
         "attributes": "",
         "definition": "Symmetry of the model domain.",
         "usedBy": [
            "ModelDomain"
         ],
         "allowedValues": [
            "Axial",
            "Central",
            "None",
            "Plane"
         ]
      },
      "TAP": {
         "version": "2.7.1",
         "since": "2.4.1",
         "term": "TAP",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The table access protocol (TAP) defines a service protocol for accessing general table data, including astronomical catalogs as well as general database tables. Access is provided for both database and table metadata as well as for actual table data. https://wiki.ivoa.net/twiki/bin/view/IVOA/TableAccess.",
         "usedBy": [],
         "allowedValues": []
      },
      "TAR": {
         "version": "2.7.1",
         "since": "1.3.0",
         "term": "TAR",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A file format used to collate collections of files into one larger file, for distribution or archiving, while preserving file system information such as user and group permissions, dates, and directory structures. The format was standardized by POSIX.1-1988 and later POSIX.1-2001.",
         "usedBy": [],
         "allowedValues": []
      },
      "TeamLeader": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "TeamLeader",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An individual who is the designated leader of an investigation.",
         "usedBy": [],
         "allowedValues": []
      },
      "TeamMember": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "TeamMember",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An individual who is a major participant in an investigation.",
         "usedBy": [],
         "allowedValues": []
      },
      "TechnicalContact": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "TechnicalContact",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An individual who can provide specific information with regard to the resource or supporting software.",
         "usedBy": [],
         "allowedValues": []
      },
      "TechnicalNote": {
         "version": "2.7.1",
         "since": "2.2.2",
         "term": "TechnicalNote",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A document summarizing the performance and other technical characteristics of a product, machine, component, subsystem or software in sufficient detail to be used by an engineer or researcher.",
         "usedBy": [],
         "allowedValues": []
      },
      "Telemetry": {
         "version": "2.7.1",
         "since": "2.3.2",
         "term": "Telemetry",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Parameters that include full packets of data from monitoring devices or the memory addresses of datum within telemetry packets. The data comprising telemetry packets are typically expressed by using non-physical engineering units and may be used to express a variety of device operating conditions such as command acceptance/execution, housekeeping, event characterization, memory dumps, and science data. Telemetry packets may be raw or unpacked.",
         "usedBy": [],
         "allowedValues": []
      },
      "Temperature": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Temperature",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A measure of the kinetic energy of random motion with respect to the average. Temperature is properly defined only for an equilibrium particle distribution (Maxwellian distribution).",
         "usedBy": [],
         "allowedValues": []
      },
      "Template": {
         "version": "2.7.1",
         "since": "2.3.0",
         "term": "Template",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A URI template that contains special fields as defined in URI Template specification http://tsds.org/uri_templates.",
         "usedBy": [],
         "allowedValues": []
      },
      "Temporal": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Temporal",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Pertaining to time.",
         "usedBy": [],
         "allowedValues": []
      },
      "TemporalDependence": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "TemporalDependence",
         "type": "Enumeration",
         "list": "YN",
         "element": "",
         "attributes": "",
         "definition": "Whether the model results are obtained from a stationary solution or are dynamically computed.",
         "usedBy": [
            "Model",
            "ModelRun"
         ],
         "allowedValues": [
            "No",
            "Yes"
         ]
      },
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         "version": "2.7.1",
         "since": "1.0.0",
         "term": "TemporalDescription",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A characterization of the time over which the measurement was taken.",
         "usedBy": [
            "DisplayData",
            "DisplayOutput",
            "NumericalData",
            "NumericalOutput"
         ],
         "subElements": [
            "TimeSpan",
            "Cadence",
            "CadenceMin",
            "CadenceMax",
            "Exposure",
            "ExposureMin",
            "ExposureMax"
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         "allowedValues": []
      },
      "Tensor": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Tensor",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A generalized linear quantity or geometrical entity that can be expressed as a multi-dimensional array relative to a choice of basis of the particular space on which it is defined.",
         "usedBy": [],
         "allowedValues": []
      },
      "TestParticle": {
         "version": "2.7.1",
         "since": "2.6.0",
         "term": "TestParticle",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A numerical scheme modeling the motion of charged particles in a prescribed field.",
         "usedBy": [],
         "allowedValues": []
      },
      "Tethys": {
         "version": "2.7.1",
         "since": "2.2.5",
         "term": "Tethys",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The fifth largest moon of Saturn and the sixteenth largest moon in the Solar System. The orbit Tethys is the third closest to Saturn of the major Cronian moons.",
         "usedBy": [],
         "allowedValues": []
      },
      "Text": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Text",
         "type": "Enumeration",
         "list": "Text",
         "element": "",
         "attributes": "",
         "definition": "A sequence of characters which may have an imposed structure or organization.",
         "usedBy": [],
         "allowedValues": [
            "ASCII",
            "Unicode"
         ]
      },
      "TFCat": {
         "version": "2.7.1",
         "since": "2.4.1",
         "term": "TFCat",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Time-Frequency Catalogue (TFCat) is a catalogue model & transfer format for spectro-temporal features. https://gitlab.obspm.fr/maser/catalogues/catalogue-format.",
         "usedBy": [],
         "allowedValues": []
      },
      "ThermalPlasma": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "ThermalPlasma",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Measurements of the plasma in the energy regime where the most of the plasma occurs. May be the basic fluxes in the form of distribution functions or the derived bulk parameters (density, flow velocity, etc.).",
         "usedBy": [],
         "allowedValues": []
      },
      "ThermalSpeed": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "ThermalSpeed",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A characteristic fluctuation speed of a distribution of particles about the bulk flow speed of the distribution. The value of the thermal speed depends on the dimensions and temperature of the distribution. Specific quantitative definition of thermal speed must be provided by the provider of a resource to be described in SPASE. [Note: Its quantitative definition depends on the nature of the particle distribution and how the random speed is characterized or calculated and must be specified in the description of the quantity used in the product described by the SPASE document].",
         "usedBy": [],
         "allowedValues": []
      },
      "Thermosphere": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Thermosphere",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The layer of the atmosphere that extends from the Mesosphere to 640+ km, temperature increasing with height.",
         "usedBy": [],
         "allowedValues": []
      },
      "Thumbnail": {
         "version": "2.7.1",
         "since": "1.3.1",
         "term": "Thumbnail",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A small representation of an image which is suitable to infer what the full-sized imaged is like.",
         "usedBy": [],
         "allowedValues": []
      },
      "TIFF": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "TIFF",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A binary format for still pictures. Tagged Image Format File (TIFF). Originally developed by Aldus and now controlled by Adobe.",
         "usedBy": [],
         "allowedValues": []
      },
      "TIIS": {
         "version": "2.7.1",
         "since": "2.2.5",
         "term": "TIIS",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Kronian Solar Orbital - A coordinate system related to Saturn where the x-axis is anti-sunward and the y-axis points in the orbital velocity direction.",
         "usedBy": [],
         "allowedValues": []
      },
      "TimeOfFlight": {
         "version": "2.7.1",
         "since": "1.2.1",
         "term": "TimeOfFlight",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An instrument which measures the time it takes for a particle to travel between two detectors.",
         "usedBy": [],
         "allowedValues": []
      },
      "TimeSeries": {
         "version": "2.7.1",
         "since": "1.3.1",
         "term": "TimeSeries",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A representation of data showing a set of observations taken at different points in time and charted as a time series.",
         "usedBy": [],
         "allowedValues": []
      },
      "TimeSpan": {
         "version": "2.7.1",
         "since": "1.1.0",
         "term": "TimeSpan",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The duration of an interval in time.",
         "usedBy": [
            "Annotation",
            "Catalog",
            "TemporalDescription"
         ],
         "subElements": [
            "StartDate",
            "StopDate",
            "RelativeStopDate",
            "Note"
         ],
         "allowedValues": []
      },
      "TimeStart": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "TimeStart",
         "type": "DateTime",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Time at which the coverage by the element begins.",
         "usedBy": [
            "DiagnosisTimeStep",
            "ModelTime"
         ],
         "allowedValues": []
      },
      "TimeStep": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "TimeStep",
         "type": "Duration",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Time Step.",
         "usedBy": [
            "ModelTime"
         ],
         "allowedValues": []
      },
      "TimeStop": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "TimeStop",
         "type": "DateTime",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Time at which the coverage by the element ends.",
         "usedBy": [
            "ModelTime"
         ],
         "allowedValues": []
      },
      "Titan": {
         "version": "2.7.1",
         "since": "2.2.5",
         "term": "Titan",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The largest moon of Saturn and the second largest moon in the Solar System.",
         "usedBy": [],
         "allowedValues": []
      },
      "Titania": {
         "version": "2.7.1",
         "since": "2.2.5",
         "term": "Titania",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The largest moon of Uranus and the eighth largest moon in the Solar System.",
         "usedBy": [],
         "allowedValues": []
      },
      "Title": {
         "version": "2.7.1",
         "since": "2.4.2",
         "term": "Title",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The name of a published composition, set or data, images or other work.",
         "usedBy": [
            "PublicationInfo"
         ],
         "allowedValues": []
      },
      "Topside": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Topside",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The region at the upper most areas of the ionosphere.",
         "usedBy": [],
         "allowedValues": []
      },
      "Total": {
         "version": "2.7.1",
         "since": "1.3.6",
         "term": "Total",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The summation of quantities over all possible species.",
         "usedBy": [],
         "allowedValues": []
      },
      "TotalPressure": {
         "version": "2.7.1",
         "since": "1.3.5",
         "term": "TotalPressure",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "In an MHD fluid it is the number density (N) times Boltzmann constant times the temperature in Kelvin.",
         "usedBy": [],
         "allowedValues": []
      },
      "TotalProductionRate": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "TotalProductionRate",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The total number of items that can be produced during a given period of time.",
         "usedBy": [
            "InputPopulation"
         ],
         "allowedValues": []
      },
      "Trace": {
         "version": "2.7.1",
         "since": "1.3.1",
         "term": "Trace",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The sum of the elements on the main diagonal (the diagonal from the upper left to the lower right) of a square matrix.",
         "usedBy": [],
         "allowedValues": []
      },
      "TransitionRegion": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "TransitionRegion",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A very narrow (<100 km) layer between the chromosphere and the corona where the temperature rises abruptly from about 8000 to about 500,000 K.",
         "usedBy": [],
         "allowedValues": []
      },
      "Triton": {
         "version": "2.7.1",
         "since": "2.2.5",
         "term": "Triton",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The largest moon of Neptune.",
         "usedBy": [],
         "allowedValues": []
      },
      "Troposphere": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Troposphere",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The lowest layer of the atmosphere which begins at the surface and extends to between 7 km (4.4 mi) at the poles and 17 km (10.6 mi) at the equator, with some variation due to weather factors.",
         "usedBy": [],
         "allowedValues": []
      },
      "UCD": {
         "version": "2.7.1",
         "since": "2.2.9",
         "term": "UCD",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The nature of a physical parameter expressed using the IVOA UCD1+ controlled vocabulary.",
         "usedBy": [
            "Parameter"
         ],
         "allowedValues": []
      },
      "UDF": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "UDF",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Universal Data Format (UDF). The Optical Technology Storage Association Universal Disk Format, based on ISO 13346, see http://www.osta.org/specs/index.htm.",
         "usedBy": [],
         "allowedValues": []
      },
      "Ultraviolet": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Ultraviolet",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Photons with a wavelength range: 10 nm to 400 nm.",
         "usedBy": [],
         "allowedValues": []
      },
      "Umbriel": {
         "version": "2.7.1",
         "since": "2.2.5",
         "term": "Umbriel",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The third largest and fourth most massive moon of Uranus.",
         "usedBy": [],
         "allowedValues": []
      },
      "Unavailable": {
         "version": "2.7.1",
         "since": "2.7.1",
         "term": "Unavailable",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "No longer available dataset.",
         "usedBy": [],
         "allowedValues": []
      },
      "Uncalibrated": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Uncalibrated",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Duplicate data are removed from the data stream and data are time ordered. Values are not adjusted for any potential biases or external factors. Similar to NASA Level 1.",
         "usedBy": [],
         "allowedValues": []
      },
      "Uncertainty": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Uncertainty",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A statistically defined discrepancy between a measured quantity and the true value of that quantity that cannot be corrected by calculation or calibration.",
         "usedBy": [],
         "allowedValues": []
      },
      "Unicode": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Unicode",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Text in multi-byte Unicode format.",
         "usedBy": [],
         "allowedValues": []
      },
      "Units": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Units",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A description of the standardized measurement increments in which a value is specified. The description is represented as a mathematical phrase. Units should be represented by widely accepted representation. For example, units should conform to the International System of Units (SI) which is maintained by BIPM (Bureau International des Poids et Mesures (see links listed in the Bibliography) when appropriate or use tokens like R<sub>E</sub> to represent units of the Radius of the Earth. Within a phrase the circumflex (^) is used to indicate a power, a star (*) is used to indicate multiplication and a slash (/) division. When symbols are not separated by a mathematical operator, multiplication is assumed.",
         "usedBy": [
            "AzimuthalAngleRange",
            "DataExtent",
            "Element",
            "EnergyRange",
            "FrequencyRange",
            "InputField",
            "InputProcess",
            "InputProperty",
            "MassRange",
            "ModelDomain",
            "OutputProperty",
            "Parameter",
            "PitchAngleRange",
            "PolarAngleRange",
            "Property",
            "SpatialDescription",
            "WavelengthRange"
         ],
         "allowedValues": []
      },
      "UnitsConversion": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "UnitsConversion",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The multiplicative factor for converting a unit into International System of Units (SI) units. The factor is expressed in the form \"number>x\", where \"number\" is a numerical value and \"x\" is the appropriate SI units. The basic SI units are Enumerated: m (meter), N (newton), kg (kilogram), Pa (pascal), s (second), Hz (hertz), A (ampere), V (volt), K (kelvin), W (watt), rad (radian), J (joule), sr (steradian), C (coulomb), T (tesla), ohm (ohm), mho (mho or seimens), H (henry), and F (farad). Two useful units which are not SI units are: degree (angle), and unitless (no units). An example is: \"1e-9>T\" which converts the units of magnetic field data expressed in nT to Tesla. Another example is: \"1e+3>m/s\" which converts a velocity expressed in kilometers per second to meters per second.",
         "usedBy": [
            "Element",
            "InputField",
            "InputProcess",
            "ModelDomain",
            "Parameter",
            "Property",
            "SpatialDescription"
         ],
         "allowedValues": []
      },
      "Unlikely": {
         "version": "2.7.1",
         "since": "1.3.6",
         "term": "Unlikely",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Not likely given the available evidence. Considered equal to 0 on a scale of 0 to 10.",
         "usedBy": [],
         "allowedValues": []
      },
      "Unspecified": {
         "version": "2.7.1",
         "since": "1.2.1",
         "term": "Unspecified",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A value which is not provided.",
         "usedBy": [],
         "allowedValues": []
      },
      "UpperHybridFrequency": {
         "version": "2.7.1",
         "since": "2.3.1",
         "term": "UpperHybridFrequency",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Upper hybrid oscillations involve longitudinal motions of electrons perpendicular to the magnetic field. The upper hybrid frequency, &phi;<sub>UH</sub>, is governed by the relationship &phi;<sub>UH</sub>^2=&phi;<sub>pe</sub>^2+&theta;<sub>ce</sub>^2 where &phi;<sub>pe</sub> is electron plasma frequency and &theta;<sub>ce</sub> is the electron cyclotron frequency.",
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         "allowedValues": []
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      "Uranus": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Uranus",
         "type": "Enumeration",
         "list": "Uranus",
         "element": "",
         "attributes": "",
         "definition": "The eighth planet from the Sun in our solar system.",
         "usedBy": [],
         "allowedValues": [
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            "Magnetosphere",
            "Magnetosphere.Magnetotail",
            "Magnetosphere.Main",
            "Magnetosphere.Plasmasphere",
            "Magnetosphere.Polar",
            "Magnetosphere.RadiationBelt",
            "Magnetosphere.RingCurrent",
            "Miranda",
            "Oberon",
            "Puck",
            "Titania",
            "Umbriel"
         ]
      },
      "URL": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "URL",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Uniform Resource Locator (URL) is the global address of documents and other resources on the World Wide Web. The first part of the address indicates what protocol to use, and the second part specifies the IP address or the domain name where the resource is located followed by the pathname of the resource. A URL is specified in the form protocol://server.domain.name:port/pathname. Example protocols are HTTP or FTP, server domain name is the Internet name.",
         "usedBy": [
            "AccessURL",
            "InformationURL",
            "Installer",
            "Source"
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         "allowedValues": []
      },
      "User": {
         "version": "2.7.1",
         "since": "2.3.1",
         "term": "User",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An individual who utilizes a resource or service.",
         "usedBy": [],
         "allowedValues": []
      },
      "ValidMax": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "ValidMax",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The largest legitimate value.",
         "usedBy": [
            "Element",
            "InputField",
            "InputProperty",
            "ModelDomain",
            "OutputProperty",
            "Parameter",
            "Property"
         ],
         "allowedValues": []
      },
      "ValidMin": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "ValidMin",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The smallest legitimate value.",
         "usedBy": [
            "Element",
            "InputField",
            "InputProperty",
            "ModelDomain",
            "OutputProperty",
            "Parameter",
            "Property"
         ],
         "allowedValues": []
      },
      "ValueAdded": {
         "version": "2.7.1",
         "since": "2.4.0",
         "term": "ValueAdded",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Calibrated data that has been mapped on uniform space-time grid scales with gaps, flags and out-of-range values replaced with appropriate values. Similar to NASA Level 3.",
         "usedBy": [],
         "allowedValues": []
      },
      "ValueFormat": {
         "version": "2.7.1",
         "since": "1.3.1",
         "term": "ValueFormat",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A string defining the output format used when extracting data values out to a file or screen. The magnitude and the number of significant figures needed should be carefully considered. The output format string can be in either Fortran or C syntax.",
         "usedBy": [
            "RenderingHints"
         ],
         "allowedValues": []
      },
      "Variance": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Variance",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A measure of dispersion of a set of data points around their mean value. The expectation value of the squared deviations from the mean.",
         "usedBy": [],
         "allowedValues": []
      },
      "VCrossB": {
         "version": "2.7.1",
         "since": "1.3.5",
         "term": "VCrossB",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The cross product of the charge velocity (V) and the magnetic field (B). It is the electric field exerted on a point charge by a magnetic field.",
         "usedBy": [],
         "allowedValues": []
      },
      "Vector": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Vector",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A set of parameter values each along some independent variable (e.g., components of a field in three orthogonal spatial directions, atmospheric temperature values at several altitudes, or at a given latitude and longitude).",
         "usedBy": [],
         "allowedValues": []
      },
      "Velocity": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Velocity",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Rate of change of position. Also used for the average velocity of a collection of particles, also referred to as bulk velocity.",
         "usedBy": [],
         "allowedValues": []
      },
      "VelocityDimension": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "VelocityDimension",
         "type": "Count",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Number of velocity dimensions in the model domain.",
         "usedBy": [
            "ModelDomain"
         ],
         "allowedValues": []
      },
      "Venus": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "Venus",
         "type": "Enumeration",
         "list": "Venus",
         "element": "",
         "attributes": "",
         "definition": "The second planet from the Sun in our solar system.",
         "usedBy": [],
         "allowedValues": [
            "Magnetosphere",
            "Magnetosphere.Magnetotail",
            "Magnetosphere.Main",
            "Magnetosphere.Plasmasphere",
            "Magnetosphere.Polar",
            "Magnetosphere.RadiationBelt",
            "Magnetosphere.RingCurrent"
         ]
      },
      "Version": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "Version",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Indicates the release identifier. When used to indicate the release of the SPASE data model, it is a in the form \"Major.Minor.Fix\" where Major: A significant change in the architecture of the model or rewrite of the implementation. This includes major changes in design or implementation language. This number starts at 0 (zero). Minor: An addition of terms or features that require changes in documentation/external API. This number starts at 0 (zero). Fix: Any change that does not require documentation/external API changes. This number starts at 0 (zero).",
         "usedBy": [
            "Spase"
         ],
         "allowedValues": []
      },
      "Versions": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "Versions",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A container of one or more sets of version information.",
         "usedBy": [
            "Model"
         ],
         "subElements": [
            "ModelVersion"
         ],
         "allowedValues": []
      },
      "VersionTag": {
         "version": "2.7.1",
         "since": "2.5.0",
         "term": "VersionTag",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The text string for a version indicator.",
         "usedBy": [
            "ModelSpecification",
            "ModelVersion"
         ],
         "allowedValues": []
      },
      "Vertical": {
         "version": "2.7.1",
         "since": "2.2.0",
         "term": "Vertical",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Perpendicular to the plane of the horizon or a base line.",
         "usedBy": [],
         "allowedValues": []
      },
      "VolumeEmissionRate": {
         "version": "2.7.1",
         "since": "2.3.2",
         "term": "VolumeEmissionRate",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The volume emission rate, e(r,t,l), is the number of photons emitted per unit source volume per second (photons/m^3/s), as measured along the line of sight between the source point and the observer. The Volume Emission Rate is in general a function of the line-of-sight distance, r, time, t, and wavelength, l. The Volume Emission Rate is actually not a directly measurable quantity. However, the term has been commonly used in both data product descriptions and research publications.",
         "usedBy": [],
         "allowedValues": []
      },
      "VOTable": {
         "version": "2.7.1",
         "since": "1.1.0",
         "term": "VOTable",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A proposed IVOA standard designed as a flexible storage and exchange format for tabular data.",
         "usedBy": [],
         "allowedValues": []
      },
      "VSO": {
         "version": "2.7.1",
         "since": "2.2.4",
         "term": "VSO",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Venus Solar Orbital - A coordinate system related to Venus where the x-axis is anti-sunward and the y-axis point along the orbital velocity direction.",
         "usedBy": [],
         "allowedValues": []
      },
      "Wave": {
         "version": "2.7.1",
         "since": "1.3.5",
         "term": "Wave",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Periodic or quasi-periodic (AC) variations of physical quantities in time and space, capable of propagating or being trapped within particular regimes.",
         "usedBy": [
            "Parameter"
         ],
         "subElements": [
            "WaveType",
            "Qualifier",
            "WaveQuantity",
            "EnergyRange",
            "FrequencyRange",
            "WavelengthRange",
            "SourceRegion",
            "SourceRegionExtent"
         ],
         "allowedValues": []
      },
      "WaveForm": {
         "version": "2.7.1",
         "since": "1.3.5",
         "term": "WaveForm",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Spatial or temporal variations of wave amplitude over wave period time scales.",
         "usedBy": [],
         "allowedValues": []
      },
      "WaveformReceiver": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "WaveformReceiver",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A radio receiver which outputs the value of one or more components of the electric and/or magnetic field as a function of time.",
         "usedBy": [],
         "allowedValues": []
      },
      "Wavelength": {
         "version": "2.7.1",
         "since": "1.3.5",
         "term": "Wavelength",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The peak-to-peak distance over one wave period.",
         "usedBy": [],
         "allowedValues": []
      },
      "WavelengthRange": {
         "version": "2.7.1",
         "since": "1.3.0",
         "term": "WavelengthRange",
         "type": "Container",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The range of possible values for the observed wavelength.",
         "usedBy": [
            "Wave"
         ],
         "subElements": [
            "SpectralRange",
            "Low",
            "High",
            "Units",
            "Bin"
         ],
         "allowedValues": []
      },
      "WavePhase": {
         "version": "2.7.1",
         "since": "2.7.0",
         "term": "WavePhase",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Position of a wave within its cycle at a given point in time.",
         "usedBy": [],
         "allowedValues": []
      },
      "WaveQuantity": {
         "version": "2.7.1",
         "since": "1.3.5",
         "term": "WaveQuantity",
         "type": "Enumeration",
         "list": "WaveQuantity",
         "element": "",
         "attributes": "",
         "definition": "A characterization of the physical properties of a wave.",
         "usedBy": [
            "Wave"
         ],
         "allowedValues": [
            "Absorption",
            "ACElectricField",
            "ACMagneticField",
            "Albedo",
            "DopplerFrequency",
            "Emissivity",
            "EnergyFlux",
            "EquivalentWidth",
            "Frequency",
            "Gyrofrequency",
            "Intensity",
            "LineDepth",
            "LowerHybridFrequency",
            "MagneticField",
            "ModeAmplitude",
            "PlasmaFrequency",
            "Polarization",
            "PoyntingFlux",
            "PropagationTime",
            "StokesParameters",
            "UpperHybridFrequency",
            "Velocity",
            "VolumeEmissionRate",
            "Wavelength",
            "WavePhase"
         ]
      },
      "Waves": {
         "version": "2.7.1",
         "since": "1.3.4",
         "term": "Waves",
         "type": "Enumeration",
         "list": "Waves",
         "element": "",
         "attributes": "",
         "definition": "Data resulting from observations of wave experiments and natural wave phenomena. Wave experiments are typically active and natural wave phenomena are passive. Examples of wave experiments include coherent/incoherent scatter radars, radio soundings, VLF propagation studies, ionospheric scintillation of beacon satellite signals, etc. Examples of natural wave phenomena include micropulsations, mesospheric gravity waves, auroral/plasmaspheric hiss, Langmuir waves, AKR, Jovian decametric radiation, solar radio bursts, etc.",
         "usedBy": [],
         "allowedValues": [
            "Active",
            "Passive"
         ]
      },
      "WaveType": {
         "version": "2.7.1",
         "since": "1.3.5",
         "term": "WaveType",
         "type": "Enumeration",
         "list": "WaveType",
         "element": "",
         "attributes": "",
         "definition": "A characterization of the carrier or phenomenon of wave information observed by the measurement.",
         "usedBy": [
            "Wave"
         ],
         "allowedValues": [
            "Electromagnetic",
            "Electrostatic",
            "Hydrodynamic",
            "MHD",
            "Photon",
            "PlasmaWaves"
         ]
      },
      "Weak": {
         "version": "2.7.1",
         "since": "1.3.6",
         "term": "Weak",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Slightly likely given the available evidence. Considered in the range of 1 to 4 on a scale of 0 to 10.",
         "usedBy": [],
         "allowedValues": []
      },
      "WebResource": {
         "version": "2.7.1",
         "since": "2.4.1",
         "term": "WebResource",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A Web page or file-based resource accessible by a URL.",
         "usedBy": [],
         "allowedValues": []
      },
      "WebService": {
         "version": "2.7.1",
         "since": "2.3.0",
         "term": "WebService",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "A Web-based service that uses SOAP, WSDL or UDDI open standards.",
         "usedBy": [],
         "allowedValues": []
      },
      "WesternmostLongitude": {
         "version": "2.7.1",
         "since": "2.4.2",
         "term": "WesternmostLongitude",
         "type": "Text",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The longitude furthest to the west in a geographic coordinate system.",
         "usedBy": [
            "SpatialCoverage"
         ],
         "allowedValues": []
      },
      "WGS84": {
         "version": "2.7.1",
         "since": "1.2.0",
         "term": "WGS84",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The World Geodetic System (WGS) defines a reference frame for the Earth, for use in geodesy and navigation. The WGS84 uses the zero meridian as defined by the Bureau International de l'Heure.",
         "usedBy": [],
         "allowedValues": []
      },
      "WhiteLight": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "WhiteLight",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Photons with a wavelength in the visible range for humans.",
         "usedBy": [],
         "allowedValues": []
      },
      "WhitePaper": {
         "version": "2.7.1",
         "since": "2.2.2",
         "term": "WhitePaper",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An authoritative report giving information or proposals on an issue.",
         "usedBy": [],
         "allowedValues": []
      },
      "Withdrawn": {
         "version": "2.7.1",
         "since": "2.7.1",
         "term": "Withdrawn",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Officially removed dataset.",
         "usedBy": [],
         "allowedValues": []
      },
      "XML": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "XML",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "eXtensible Mark-up Language (XML). A structured format for representing information, see http://www.w3.org/XML/.",
         "usedBy": [],
         "allowedValues": []
      },
      "XRays": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "XRays",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "Photons with a wavelength range: 0.001 nm to 10 nm.",
         "usedBy": [],
         "allowedValues": []
      },
      "Yes": {
         "version": "2.7.1",
         "since": "2.6.0",
         "term": "Yes",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "The affirmative response to a yes or no question.",
         "usedBy": [],
         "allowedValues": []
      },
      "YN": {
         "version": "2.7.1",
         "since": "2.6.0",
         "term": "YN",
         "type": "Enumeration",
         "list": "YN",
         "element": "",
         "attributes": "",
         "definition": "The affirmative or negative response to a yes or no question.",
         "usedBy": [],
         "allowedValues": [
            "No",
            "Yes"
         ]
      },
      "ZIP": {
         "version": "2.7.1",
         "since": "1.0.0",
         "term": "ZIP",
         "type": "Item",
         "list": "",
         "element": "",
         "attributes": "",
         "definition": "An open standard for compression which is a variation of the LZW method and was originally used in the PKZIP utility.",
         "usedBy": [],
         "allowedValues": []
      }
   },
   "list": {
      "AccessRights": {
         "version": "2.7.1",
         "since": "1.0.0",
         "name": "AccessRights",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for permissions granted or denied by the host of a product to allow other users to access and use the resource."
      },
      "AdiabaticInvariant": {
         "version": "2.7.1",
         "since": "2.3.1",
         "name": "AdiabaticInvariant",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for properties of a physical system related to periodic phenomena that remains constant under slowly varying conditions."
      },
      "AnnotationType": {
         "version": "2.7.1",
         "since": "1.3.4",
         "name": "AnnotationType",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for an classification of an annotation."
      },
      "ApplicationInterface": {
         "version": "2.7.1",
         "since": "2.4.0",
         "name": "ApplicationInterface",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the type of interface for the application."
      },
      "AssociationType": {
         "version": "2.7.1",
         "since": "1.3.3",
         "name": "AssociationType",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for resource associations."
      },
      "Availability": {
         "version": "2.7.1",
         "since": "1.0.0",
         "name": "Availability",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for indicating the method or service which may be used to access the resource."
      },
      "ClassificationMethod": {
         "version": "2.7.1",
         "since": "1.3.6",
         "name": "ClassificationMethod",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the technique used to determine the characteristics of an object."
      },
      "Comet": {
         "version": "2.7.1",
         "since": "2.6.0",
         "name": "Comet",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for cometary objects."
      },
      "Component": {
         "version": "2.7.1",
         "since": "1.2.0",
         "name": "Component",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the axis of coordinate systems."
      },
      "ConfidenceRating": {
         "version": "2.7.1",
         "since": "1.3.4",
         "name": "ConfidenceRating",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the classification of the certainty of an assertion."
      },
      "CoordinateRepresentation": {
         "version": "2.7.1",
         "since": "1.0.0",
         "name": "CoordinateRepresentation",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers of the method or form for specifying a given point or vector in a given coordinate system."
      },
      "CoordinateSystemName": {
         "version": "2.7.1",
         "since": "1.0.0",
         "name": "CoordinateSystemName",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers of the origin and orientation of a set of typically orthogonal axes."
      },
      "DirectionAngle": {
         "version": "2.7.1",
         "since": "1.3.4",
         "name": "DirectionAngle",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the angle between a vector and a base axis."
      },
      "DirectionCosine": {
         "version": "2.7.1",
         "since": "2.3.1",
         "name": "DirectionCosine",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the cosine of the angle between two vectors in a three dimensional Euclidean space."
      },
      "DisplayType": {
         "version": "2.7.1",
         "since": "1.3.1",
         "name": "DisplayType",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for types or classes of rendered data."
      },
      "DocumentType": {
         "version": "2.7.1",
         "since": "1.3.0",
         "name": "DocumentType",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the characterization of the content or purpose of a document."
      },
      "Earth": {
         "version": "2.7.1",
         "since": "1.1.0",
         "name": "Earth",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the regions surrounding the Earth."
      },
      "Encoding": {
         "version": "2.7.1",
         "since": "1.0.0",
         "name": "Encoding",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for unambiguous rules that establishes the representation of information within a file."
      },
      "FieldQuantity": {
         "version": "2.7.1",
         "since": "1.0.0",
         "name": "FieldQuantity",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the physical attribute of the field."
      },
      "Format": {
         "version": "2.7.1",
         "since": "1.0.0",
         "name": "Format",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for data organized according to preset specifications."
      },
      "Hardcopy": {
         "version": "2.7.1",
         "since": "2.2.0",
         "name": "Hardcopy",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for permanent reproductions, or copy in the form of a physical object, of any media suitable for direct use by a person."
      },
      "HashFunction": {
         "version": "2.7.1",
         "since": "1.2.0",
         "name": "HashFunction",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for functions or algorithms that convert a digital data object into a hash value."
      },
      "Heliosphere": {
         "version": "2.7.1",
         "since": "1.0.0",
         "name": "Heliosphere",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for regions of the solar atmosphere which extends roughly from the inner corona to the edge of the solar plasma at the heliopause separating primarily solar plasma from interstellar plasma."
      },
      "InstrumentType": {
         "version": "2.7.1",
         "since": "1.0.0",
         "name": "InstrumentType",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the type of experiment the instrument performs. This is the technique of observation."
      },
      "Integral": {
         "version": "2.7.1",
         "since": "1.3.6",
         "name": "Integral",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for values above a given threshold and over area or solid-angle range."
      },
      "Ionosphere": {
         "version": "2.7.1",
         "since": "1.3.0",
         "name": "Ionosphere",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for ionospheric regions."
      },
      "Jupiter": {
         "version": "2.7.1",
         "since": "2.2.5",
         "name": "Jupiter",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the regions surrounding the planet Jupiter."
      },
      "Magnetosphere": {
         "version": "2.7.1",
         "since": "1.0.0",
         "name": "Magnetosphere",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the region of space above the atmosphere or surface of the planet, and bounded by the magnetopause, that is under the direct influence of the magnetic field of a planet, moon, or asteroid."
      },
      "Mars": {
         "version": "2.7.1",
         "since": "2.2.5",
         "name": "Mars",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the regions surrounding the planet Mars."
      },
      "MeasurementType": {
         "version": "2.7.1",
         "since": "1.0.0",
         "name": "MeasurementType",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the method of making an estimated value of a quantity that forms the basis of an observation."
      },
      "Mercury": {
         "version": "2.7.1",
         "since": "2.2.5",
         "name": "Mercury",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the regions surrounding the planet Mercury."
      },
      "MixedQuantity": {
         "version": "2.7.1",
         "since": "1.3.5",
         "name": "MixedQuantity",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the combined attributes of a mixed parameter quantity."
      },
      "ModeledRegion": {
         "version": "2.7.1",
         "since": "2.6.0",
         "name": "ModeledRegion",
         "type": "Closed",
         "reference": "Region,SpecificModeledRegion",
         "definition": "Identifiers for areas of the physical world which may be occupied or observed."
      },
      "ModelProduct": {
         "version": "2.7.1",
         "since": "2.6.0",
         "name": "ModelProduct",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the type of products generated by a model."
      },
      "ModelType": {
         "version": "2.7.1",
         "since": "2.6.0",
         "name": "ModelType",
         "type": "Closed",
         "reference": "",
         "definition": "A characterization of the numerical scheme used in the model."
      },
      "NearSurface": {
         "version": "2.7.1",
         "since": "1.0.0",
         "name": "NearSurface",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for regions of the gaseous and possibly ionized environment of a body extending from the surface to some specified altitude."
      },
      "Neptune": {
         "version": "2.7.1",
         "since": "2.2.5",
         "name": "Neptune",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the regions surrounding the planet Neptune."
      },
      "ParameterQuantity": {
         "version": "2.7.1",
         "since": "2.6.0",
         "name": "ParameterQuantity",
         "type": "Closed",
         "reference": "DirectionAngle,FieldQuantity,InstrumentType,MeasurementType,MixedQuantity,ParticleQuantity,ParticleType,ProcessCoeffType,ProcessType,ModelProduct,SpectralRange,SupportQuantity,WaveQuantity,WaveType",
         "definition": "Identifiers for all types of parameter quantities"
      },
      "ParticleQuantity": {
         "version": "2.7.1",
         "since": "1.1.0",
         "name": "ParticleQuantity",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the characterization of the physical properties of the particle."
      },
      "ParticleType": {
         "version": "2.7.1",
         "since": "1.0.0",
         "name": "ParticleType",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the characterization of the kind of particle observed by the measurement."
      },
      "PhenomenonType": {
         "version": "2.7.1",
         "since": "1.0.0",
         "name": "PhenomenonType",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the characteristics or categorization of an observation. Note: Joe King to provide."
      },
      "ProcessCoeffType": {
         "version": "2.7.1",
         "since": "2.6.0",
         "name": "ProcessCoeffType",
         "type": "Closed",
         "reference": "",
         "definition": "Whether the model results are obtained from a stationary solution or are dynamically computed."
      },
      "ProcessingLevel": {
         "version": "2.7.1",
         "since": "1.0.0",
         "name": "ProcessingLevel",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers to characterize the amount and type of manipulation which has been applied to the sampled data."
      },
      "ProcessType": {
         "version": "2.7.1",
         "since": "2.6.0",
         "name": "ProcessType",
         "type": "Closed",
         "reference": "",
         "definition": "Type of chemical process."
      },
      "Projection": {
         "version": "2.7.1",
         "since": "1.3.4",
         "name": "Projection",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers to projections into a coordinate system."
      },
      "Qualifier": {
         "version": "2.7.1",
         "since": "1.3.1",
         "name": "Qualifier",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for terms which refine the type or attribute of a quantity."
      },
      "Region": {
         "version": "2.7.1",
         "since": "1.0.0",
         "name": "Region",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for areas of the physical world which may be occupied or observed."
      },
      "RenderingAxis": {
         "version": "2.7.1",
         "since": "2.2.0",
         "name": "RenderingAxis",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the reference component of a plot or rendering of data."
      },
      "ResourceType": {
         "version": "2.7.1",
         "since": "2.7.0",
         "name": "ResourceType",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for all SPASE resource types."
      },
      "Role": {
         "version": "2.7.1",
         "since": "1.0.0",
         "name": "Role",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the assigned or assumed function or position of an individual."
      },
      "Saturn": {
         "version": "2.7.1",
         "since": "2.2.5",
         "name": "Saturn",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the regions surrounding the planet Saturn."
      },
      "SavedQuantity": {
         "version": "2.7.1",
         "since": "2.6.0",
         "name": "SavedQuantity",
         "type": "Closed",
         "reference": "FieldQuantity,MixedQuantity,ParticleQuantity,ModelProduct,WaveQuantity",
         "definition": "Quantities that are saved during a given diagnosis."
      },
      "ScaleType": {
         "version": "2.7.1",
         "since": "1.3.1",
         "name": "ScaleType",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for scaling applied to a set of numbers."
      },
      "SourceType": {
         "version": "2.7.1",
         "since": "1.3.1",
         "name": "SourceType",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the characterization of the function or purpose of a source."
      },
      "SpecificModeledRegion": {
         "version": "2.7.1",
         "since": "2.6.0",
         "name": "SpecificModeledRegion",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for areas of the physical world which may be occupied or observed."
      },
      "SpectralRange": {
         "version": "2.7.1",
         "since": "1.0.0",
         "name": "SpectralRange",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for names associated with wavelengths. Based on the ISO 21348 Solar Irradiance Standard. Additions have been made to extend the frequency ranges to include those used in space physics. Those additions are indicated in blue text. The \"Total Solar Irradiance\" category has not been included since it is a type of measurement and not a specific spectral range. See Appendix A: Comparison of Spectrum Domains for a comparison of the spectral ranges with other systems."
      },
      "Status": {
         "version": "2.7.1",
         "since": "2.7.1",
         "name": "Status",
         "type": "Closed",
         "reference": "",
         "definition": "Indicates the status of the resource."
      },
      "Style": {
         "version": "2.7.1",
         "since": "2.3.0",
         "name": "Style",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the manner in which a response from a URL is presented."
      },
      "Sun": {
         "version": "2.7.1",
         "since": "1.0.0",
         "name": "Sun",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for regions of the star upon which our solar system is centered."
      },
      "SupportQuantity": {
         "version": "2.7.1",
         "since": "1.0.0",
         "name": "SupportQuantity",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the information useful in understanding the context of an observation, typically observed or measured coincidentally with a physical observation."
      },
      "Symmetry": {
         "version": "2.7.1",
         "since": "2.6.0",
         "name": "Symmetry",
         "type": "Closed",
         "reference": "",
         "definition": "Symmetry of the model domain."
      },
      "Text": {
         "version": "2.7.1",
         "since": "1.3.4",
         "name": "Text",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the encoding of sequences of characters."
      },
      "Uranus": {
         "version": "2.7.1",
         "since": "2.2.5",
         "name": "Uranus",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the regions surrounding the planet Uranus."
      },
      "Venus": {
         "version": "2.7.1",
         "since": "2.2.5",
         "name": "Venus",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the regions surrounding the planet Venus."
      },
      "WaveQuantity": {
         "version": "2.7.1",
         "since": "1.1.0",
         "name": "WaveQuantity",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the characterization of the physical properties of a wave."
      },
      "Waves": {
         "version": "2.7.1",
         "since": "1.3.4",
         "name": "Waves",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for experimental and natural wave phenomena."
      },
      "WaveType": {
         "version": "2.7.1",
         "since": "1.3.4",
         "name": "WaveType",
         "type": "Closed",
         "reference": "",
         "definition": "Identifiers for the carrier or phenomenum of wave information observed by the measurement."
      },
      "YN": {
         "version": "2.7.1",
         "since": "2.6.0",
         "name": "YN",
         "type": "Closed",
         "reference": "",
         "definition": "Yes or No"
      }
   },
   "member": {
      "AccessRights": {
         "Open": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "AccessRights",
            "item": "Open"
         },
         "PartiallyRestricted": {
            "version": "2.7.1",
            "since": "2.2.9",
            "list": "AccessRights",
            "item": "PartiallyRestricted"
         },
         "Restricted": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "AccessRights",
            "item": "Restricted"
         }
      },
      "AdiabaticInvariant": {
         "BounceMotion": {
            "version": "2.7.1",
            "since": "2.3.1",
            "list": "AdiabaticInvariant",
            "item": "BounceMotion"
         },
         "DriftMotion": {
            "version": "2.7.1",
            "since": "2.3.1",
            "list": "AdiabaticInvariant",
            "item": "DriftMotion"
         },
         "MagneticMoment": {
            "version": "2.7.1",
            "since": "2.3.1",
            "list": "AdiabaticInvariant",
            "item": "MagneticMoment"
         }
      },
      "AnnotationType": {
         "Anomaly": {
            "version": "2.7.1",
            "since": "1.3.4",
            "list": "AnnotationType",
            "item": "Anomaly"
         },
         "Event": {
            "version": "2.7.1",
            "since": "1.3.4",
            "list": "AnnotationType",
            "item": "Event"
         },
         "Feature": {
            "version": "2.7.1",
            "since": "1.3.4",
            "list": "AnnotationType",
            "item": "Feature"
         }
      },
      "ApplicationInterface": {
         "API": {
            "version": "2.7.1",
            "since": "2.4.0",
            "list": "ApplicationInterface",
            "item": "API"
         },
         "CLI": {
            "version": "2.7.1",
            "since": "2.4.0",
            "list": "ApplicationInterface",
            "item": "CLI"
         },
         "GUI": {
            "version": "2.7.1",
            "since": "2.4.0",
            "list": "ApplicationInterface",
            "item": "GUI"
         }
      },
      "AssociationType": {
         "ChildEventOf": {
            "version": "2.7.1",
            "since": "1.3.6",
            "list": "AssociationType",
            "item": "ChildEventOf"
         },
         "DerivedFrom": {
            "version": "2.7.1",
            "since": "1.3.3",
            "list": "AssociationType",
            "item": "DerivedFrom"
         },
         "ObservedBy": {
            "version": "2.7.1",
            "since": "1.3.6",
            "list": "AssociationType",
            "item": "ObservedBy"
         },
         "Other": {
            "version": "2.7.1",
            "since": "1.3.3",
            "list": "AssociationType",
            "item": "Other"
         },
         "PartOf": {
            "version": "2.7.1",
            "since": "1.3.3",
            "list": "AssociationType",
            "item": "PartOf"
         },
         "RevisionOf": {
            "version": "2.7.1",
            "since": "1.3.3",
            "list": "AssociationType",
            "item": "RevisionOf"
         },
         "SupersededBy": {
            "version": "2.7.1",
            "since": "2.7.1",
            "list": "AssociationType",
            "item": "SupersededBy"
         },
         "Supersedes": {
            "version": "2.7.1",
            "since": "2.7.1",
            "list": "AssociationType",
            "item": "Supersedes"
         }
      },
      "Availability": {
         "Offline": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "Availability",
            "item": "Offline"
         },
         "Online": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "Availability",
            "item": "Online"
         }
      },
      "ClassificationMethod": {
         "Automatic": {
            "version": "2.7.1",
            "since": "1.3.6",
            "list": "ClassificationMethod",
            "item": "Automatic"
         },
         "Inferred": {
            "version": "2.7.1",
            "since": "1.3.6",
            "list": "ClassificationMethod",
            "item": "Inferred"
         },
         "Inspection": {
            "version": "2.7.1",
            "since": "1.3.6",
            "list": "ClassificationMethod",
            "item": "Inspection"
         }
      },
      "Comet": {
         "1P-Halley": {
            "version": "2.7.1",
            "since": "2.6.0",
            "list": "Comet",
            "item": "1P-Halley"
         },
         "26P-Grigg-Skjellerup": {
            "version": "2.7.1",
            "since": "2.6.0",
            "list": "Comet",
            "item": "26P-Grigg-Skjellerup"
         },
         "67P-Churyumov-Gerasimenko": {
            "version": "2.7.1",
            "since": "2.6.0",
            "list": "Comet",
            "item": "67P-Churyumov-Gerasimenko"
         }
      },
      "Component": {
         "I": {
            "version": "2.7.1",
            "since": "1.3.4",
            "list": "Component",
            "item": "I"
         },
         "J": {
            "version": "2.7.1",
            "since": "1.3.4",
            "list": "Component",
            "item": "J"
         },
         "K": {
            "version": "2.7.1",
            "since": "1.3.4",
            "list": "Component",
            "item": "K"
         }
      },
      "ConfidenceRating": {
         "Probable": {
            "version": "2.7.1",
            "since": "1.3.4",
            "list": "ConfidenceRating",
            "item": "Probable"
         },
         "Strong": {
            "version": "2.7.1",
            "since": "1.3.4",
            "list": "ConfidenceRating",
            "item": "Strong"
         },
         "Unlikely": {
            "version": "2.7.1",
            "since": "1.3.6",
            "list": "ConfidenceRating",
            "item": "Unlikely"
         },
         "Weak": {
            "version": "2.7.1",
            "since": "1.3.6",
            "list": "ConfidenceRating",
            "item": "Weak"
         }
      },
      "CoordinateRepresentation": {
         "Cartesian": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "CoordinateRepresentation",
            "item": "Cartesian"
         },
         "Cylindrical": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "CoordinateRepresentation",
            "item": "Cylindrical"
         },
         "Spherical": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "CoordinateRepresentation",
            "item": "Spherical"
         }
      },
      "CoordinateSystemName": {
         "Carrington": {
            "version": "2.7.1",
            "since": "1.2.1",
            "list": "CoordinateSystemName",
            "item": "Carrington"
         },
         "CGM": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "CoordinateSystemName",
            "item": "CGM"
         },
         "CSO": {
            "version": "2.7.1",
            "since": "2.2.5",
            "list": "CoordinateSystemName",
            "item": "CSO"
         },
         "DM": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "CoordinateSystemName",
            "item": "DM"
         },
         "ECD": {
            "version": "2.7.1",
            "since": "2.3.1",
            "list": "CoordinateSystemName",
            "item": "ECD"
         },
         "ECEF": {
            "version": "2.7.1",
            "since": "2.2.3",
            "list": "CoordinateSystemName",
            "item": "ECEF"
         },
         "ENP": {
            "version": "2.7.1",
            "since": "2.2.3",
            "list": "CoordinateSystemName",
            "item": "ENP"
         },
         "GEI": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "CoordinateSystemName",
            "item": "GEI"
         },
         "GEO": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "CoordinateSystemName",
            "item": "GEO"
         },
         "GPHIO": {
            "version": "2.7.1",
            "since": "2.2.5",
            "list": "CoordinateSystemName",
            "item": "GPHIO"
         },
         "GSE": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "CoordinateSystemName",
            "item": "GSE"
         },
         "GSEQ": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "CoordinateSystemName",
            "item": "GSEQ"
         },
         "GSM": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "CoordinateSystemName",
            "item": "GSM"
         },
         "HAE": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "CoordinateSystemName",
            "item": "HAE"
         },
         "HCC": {
            "version": "2.7.1",
            "since": "2.2.0",
            "list": "CoordinateSystemName",
            "item": "HCC"
         },
         "HCI": {
            "version": "2.7.1",
            "since": "1.2.1",
            "list": "CoordinateSystemName",
            "item": "HCI"
         },
         "HCR": {
            "version": "2.7.1",
            "since": "2.2.0",
            "list": "CoordinateSystemName",
            "item": "HCR"
         },
         "HEE": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "CoordinateSystemName",
            "item": "HEE"
         },
         "HEEQ": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "CoordinateSystemName",
            "item": "HEEQ"
         },
         "HERTN": {
            "version": "2.7.1",
            "since": "2.2.9",
            "list": "CoordinateSystemName",
            "item": "HERTN"
         },
         "HG": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "CoordinateSystemName",
            "item": "HG"
         },
         "HGI": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "CoordinateSystemName",
            "item": "HGI"
         },
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            "version": "2.7.1",
            "since": "2.2.9",
            "list": "CoordinateSystemName",
            "item": "HGRTN"
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            "version": "2.7.1",
            "since": "2.2.0",
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            "version": "2.7.1",
            "since": "2.2.0",
            "list": "CoordinateSystemName",
            "item": "HPR"
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         "HSM": {
            "version": "2.7.1",
            "since": "2.2.5",
            "list": "CoordinateSystemName",
            "item": "HSM"
         },
         "J2000": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "CoordinateSystemName",
            "item": "J2000"
         },
         "JSM": {
            "version": "2.7.1",
            "since": "2.2.4",
            "list": "CoordinateSystemName",
            "item": "JSM"
         },
         "JSO": {
            "version": "2.7.1",
            "since": "2.2.4",
            "list": "CoordinateSystemName",
            "item": "JSO"
         },
         "KSM": {
            "version": "2.7.1",
            "since": "2.2.4",
            "list": "CoordinateSystemName",
            "item": "KSM"
         },
         "KSO": {
            "version": "2.7.1",
            "since": "2.2.4",
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         },
         "LGM": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "CoordinateSystemName",
            "item": "LGM"
         },
         "LocalGeographic": {
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            "since": "1.1.0",
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            "item": "LocalGeographic"
         },
         "LocalGeomagnetic": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "CoordinateSystemName",
            "item": "LocalGeomagnetic"
         },
         "MAG": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "CoordinateSystemName",
            "item": "MAG"
         },
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            "version": "2.7.1",
            "since": "1.1.0",
            "list": "CoordinateSystemName",
            "item": "MFA"
         },
         "MSO": {
            "version": "2.7.1",
            "since": "2.2.4",
            "list": "CoordinateSystemName",
            "item": "MSO"
         },
         "RTN": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "CoordinateSystemName",
            "item": "RTN"
         },
         "SC": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "CoordinateSystemName",
            "item": "SC"
         },
         "SE": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "CoordinateSystemName",
            "item": "SE"
         },
         "SensorCoordinates": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "CoordinateSystemName",
            "item": "SensorCoordinates"
         },
         "SM": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "CoordinateSystemName",
            "item": "SM"
         },
         "SpacecraftOrbitPlane": {
            "version": "2.7.1",
            "since": "1.2.1",
            "list": "CoordinateSystemName",
            "item": "SpacecraftOrbitPlane"
         },
         "SR": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "CoordinateSystemName",
            "item": "SR"
         },
         "SR2": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "CoordinateSystemName",
            "item": "SR2"
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         "SSE": {
            "version": "2.7.1",
            "since": "1.1.0",
            "list": "CoordinateSystemName",
            "item": "SSE"
         },
         "SSE_L": {
            "version": "2.7.1",
            "since": "2.2.0",
            "list": "CoordinateSystemName",
            "item": "SSE_L"
         },
         "StonyhurstHeliographic": {
            "version": "2.7.1",
            "since": "2.6.1",
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            "item": "StonyhurstHeliographic"
         },
         "TIIS": {
            "version": "2.7.1",
            "since": "2.2.5",
            "list": "CoordinateSystemName",
            "item": "TIIS"
         },
         "VSO": {
            "version": "2.7.1",
            "since": "2.2.4",
            "list": "CoordinateSystemName",
            "item": "VSO"
         },
         "WGS84": {
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            "since": "1.2.0",
            "list": "CoordinateSystemName",
            "item": "WGS84"
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      },
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            "list": "DirectionAngle",
            "item": "AzimuthAngle"
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            "since": "1.3.4",
            "list": "DirectionAngle",
            "item": "ElevationAngle"
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            "since": "1.3.4",
            "list": "DirectionAngle",
            "item": "PolarAngle"
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      "DirectionCosine": {
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            "since": "2.3.1",
            "list": "DirectionCosine",
            "item": "I"
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