{
  "Spase": {
    "xmlns": "http://www.spase-group.org/data/schema",
    "xmlns:xsi": "http://www.w3.org/2001/XMLSchema-instance",
    "xsi:schemaLocation": "http://www.spase-group.org/data/schema http://www.spase-group.org/data/schema/spase-2_6_1.xsd",
    "_Note": "Nodes prefixed with a _ are not valid SPASE, but are included for debugging. Values prefixed with a x_ are not valid SPASE but may considered for addition for completeness.",
    "Version": "2.6.1",
    "_MasterURL": "https://cdaweb.gsfc.nasa.gov/pub/software/cdawlib/0JSONS/mms4_hpca_brst_l2_moments_00000000_v01.json (from all.xml)",
    "NumericalData": {
      "ResourceID": "spase://NASA/NumericalData/MMS/4/HotPlasmaCompositionAnalyzer/Burst/Level2/Moments/PT10S",
      "_ResourceID": "Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ResourceID.json",
      "ResourceHeader": {
        "ResourceName": "Level 2 Moments> Hot Plasma Composition Analyzer",
        "_ResourceName": "Source: Master/CDFglobalAttributes/Logical_source_description",
        "AlternateName": "mms4_hpca_brst_l2_moments",
        "_AlternateName": "Source: Master/CDFglobalAttributes/Logical_source",
        "Description": "References",
        "_Description": "Source: Master/CDFglobalAttributes/TEXT",
        "Acknowledgement": "Confer with PI for rules of acknowledgement",
        "_Acknowledgement": "Source: Master/CDFglobalAttributes/Acknowledgement",
        "_Rights": {
          "Name": "SPDX",
          "Description": "Creative Commons Zero v1.0 Universal",
          "URL": "https://spdx.org/licenses/CC0-1.0.html",
          "SchemeURI": "https://spdx.org/licenses/"
        },
        "InformationURL": [
          {
            "URL": "https://lasp.colorado.edu/mms/sdc/public/datasets/hpca",
            "Name": "Data Caveats and Current Release Notes at LASP MMS SDC",
            "Description": "HPCA ",
            "_Note": "URL also in all.xml. Using master."
          },
          {
            "Name": "Data Caveats and Current Release Notes at LASP MMS SDC",
            "URL": "https://lasp.colorado.edu/mms/sdc/public/datasets/hpca/",
            "Description": "The Magnetospheric Multiscale (MMS) Mission home page hosted by the Laboratory of Atmospheric and Space Physics, Science Data Center (LASP, SDC) at the University of Colorado, Boulder.",
            "_Note": "URL also in all.xml, master. Using InformationURL.json."
          },
          {
            "URL": "https://science.nasa.gov/mission/mms",
            "Name": "Public Overview at NASA",
            "Description": "MMS ",
            "_Note": "URL also in all.xml. Using master."
          },
          {
            "Name": "The Magnetospheric Multiscale (MMS) Mission home page at Goddard Space Flight Center (GSFC)",
            "URL": "https://mms.gsfc.nasa.gov/",
            "Description": "The Magnetospheric Multiscale (MMS) Mission Home Page hosted by the Goddard Space Flight Center (GSFC).",
            "_Note": "URL also in all.xml, master. Using InformationURL.json."
          },
          {
            "URL": "https://mms.gsfc.nasa.gov/index.html",
            "Name": "Homepage",
            "Description": "MMS at NASA GSFC",
            "_Note": "URL also in all.xml. Using master."
          }
        ]
      },
      "Caveats": "PI determined",
      "_Caveats": "Source: Master/CDFglobalAttributes/Rules_of_use",
      "DOI": "https://doi.org/10.48322/tzpt-4t90",
      "_DOI": "Source: https://github.com/rweigel/cdawmeta-spase/blob/main/DOI.json",
      "AccessInformation": [
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: J. Burch, S. Fuselier at SWRI",
          "Format": [
            "CDF"
          ],
          "Style": "Listing",
          "AccessURL": {
            "Name": "HTTPS from SPDF",
            "URL": "https://cdaweb.gsfc.nasa.gov/pub/data/mms/mms4/hpca/brst/l2/moments",
            "Description": "In CDF via HTTP from CDAWeb",
            "AccessFilenameTemplate": "mms4_hpca_brst_l2_moments_%Y%m%d%H%M%S_%Q.cdf",
            "AccessDirectoryTemplate": "%Y/%m",
            "ProductKey": "MMS4_HPCA_BRST_L2_MOMENTS"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: J. Burch, S. Fuselier at SWRI",
          "Format": [
            "CDF"
          ],
          "Style": "Listing",
          "AccessURL": {
            "Name": "FTPS from SPDF",
            "URL": "ftps://cdaweb.gsfc.nasa.gov/pub/data/mms/mms4/hpca/brst/l2/moments",
            "Description": "In CDF via HTTP from CDAWeb",
            "AccessFilenameTemplate": "mms4_hpca_brst_l2_moments_%Y%m%d%H%M%S_%Q.cdf",
            "AccessDirectoryTemplate": "%Y/%m",
            "ProductKey": "MMS4_HPCA_BRST_L2_MOMENTS"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: J. Burch, S. Fuselier at SWRI",
          "Format": [
            "CDF",
            "CSV",
            "GIF",
            "NetCDF",
            "PNG",
            "PS",
            "PDF",
            "XML",
            "x_Script.IDL",
            "x_Script.Python",
            "Text.ASCII",
            "x_WAV"
          ],
          "AccessURL": {
            "Name": "CDAWeb Web Service",
            "URL": "https://cdaweb.gsfc.nasa.gov/WebServices/",
            "Style": "WebService",
            "Description": "Instructions for using web services to access this dataset an other other metadata and options for CDAWeb datasets. The ProductKey here corresponds to the query parameter 'dataset' in the tables at the AccessURL in a dataset-related request can be made.",
            "ProductKey": "MMS4_HPCA_BRST_L2_MOMENTS"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: J. Burch, S. Fuselier at SWRI",
          "Format": [
            "CDF",
            "GIF",
            "PDF",
            "Text.ASCII",
            "x_WAV"
          ],
          "AccessURL": {
            "Name": "CDAWeb Web Service user interface",
            "URL": "https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?index=sp_phys&dataset=MMS4_HPCA_BRST_L2_MOMENTS",
            "Style": "WebService",
            "ProductKey": "MMS4_HPCA_BRST_L2_MOMENTS",
            "Description": "Web service user interface for this product."
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: J. Burch, S. Fuselier at SWRI",
          "Format": [
            "x_Script.IDL",
            "x_Script.Python"
          ],
          "AccessURL": {
            "Name": "CDAWeb Python Script",
            "URL": "https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/MMS4_HPCA_BRST_L2_MOMENTS/clientLibraryExample/",
            "ProductKey": "MMS4_HPCA_BRST_L2_MOMENTS",
            "Style": "WebService",
            "Description": "Web service that generates a Python script to access this product."
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/SSCWeb. Please also acknowledge the data producer: J. Burch, S. Fuselier at SWRI",
          "Format": [
            "HTML"
          ],
          "AccessURL": {
            "Name": "4D Orbit Viewer",
            "URL": "https://sscweb.gsfc.nasa.gov/4dorbit/?sc=MMS4_HPCA_BRST_L2_MOMENTS",
            "ProductKey": "MMS4_HPCA_BRST_L2_MOMENTS",
            "Style": "x_Visualization",
            "Description": "Web Service to this product."
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: J. Burch, S. Fuselier at SWRI",
          "Format": [
            "CSV",
            "JSON",
            "Binary"
          ],
          "AccessURL": {
            "Name": "CDAWeb HAPI Server",
            "URL": "https://hapi-server.org/servers/#server=CDAWeb&dataset=MMS4_HPCA_BRST_L2_MOMENTS",
            "Style": "HAPI",
            "ProductKey": "MMS4_HPCA_BRST_L2_MOMENTS",
            "Description": "Web Service to this product using the HAPI interface."
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: J. Burch, S. Fuselier at SWRI",
          "Format": [
            "x_Script.IDL",
            "x_Script.Javascript",
            "x_Script.MATLAB",
            "x_Script.Python",
            "x_Script.Autoplot",
            "x_Script.curl",
            "x_Script.wget"
          ],
          "AccessURL": {
            "Name": "CDAWeb HAPI Script in Multiple Languages",
            "URL": "https://hapi-server.org/servers/#server=CDAWeb&dataset=MMS4_HPCA_BRST_L2_MOMENTS&return=script",
            "Style": "HAPI",
            "ProductKey": "MMS4_HPCA_BRST_L2_MOMENTS",
            "Description": "Web Service user interface that generates scripts in IDL, Javascript, MATLAB, Python, Autoplot, curl, wget to access this product. See https://hapi-server.org/servers/api for the API."
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: J. Burch, S. Fuselier at SWRI",
          "Format": [
            "PNG",
            "PDF",
            "SVG"
          ],
          "AccessURL": {
            "Name": "HAPI visualizations",
            "URL": "https://hapi-server.org/plot/?server=https://cdaweb.gsfc.nasa.gov/hapi&dataset=MMS4_HPCA_BRST_L2_MOMENTS&format=gallery",
            "Style": "x_Visualization",
            "ProductKey": "MMS4_HPCA_BRST_L2_MOMENTS",
            "Description": "Web Service that generates plots. See https://hapi-server.org/plot/ for the API."
          }
        }
      ],
      "_AccessInformation": "Source: https://github.com/rweigel/cdawmeta-spase/blob/main/AccessInformation.json",
      "TemporalDescription": {
        "TimeSpan": {
          "StartDate": "2015-09-01T00:00:00Z",
          "StopDate": "2026-01-31T12:56:52Z"
        },
        "_TemporalDescription": "Generated from all.xml/@timerange_start and all.xml/@timerange_stop",
        "Cadence": "PT9.999765S",
        "_Cadence": "Counts based on variable 'Epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/mms/mms4/hpca/brst/l2/moments/2015/09/mms4_hpca_brst_l2_moments_20150901121114_v4.1.0.cdf. The most common cadence, 9999765000 [ns] = PT9.999765S, occurred for 42.8571% of the 24 timesteps. "
      },
      "Keyword": [
        "MMS Satellite Number 4 (from all.xml/observatory/description/@short)",
        "Hot Plasma Composition Analyzer (from all.xml/instrument/description/@short)",
        "Space Physics (from Master/CDFglobalAttributes/Discipline)",
        "Magnetospheric Science (from Master/CDFglobalAttributes/Discipline)",
        "MMS4 (from Master/CDFglobalAttributes/Source_name)",
        "MMS Satellite Number 4 (from Master/CDFglobalAttributes/Source_name)",
        "brst_l2_moments (from Master/CDFglobalAttributes/Data_type)",
        "HPCA (from all.xml/instrument/@ID)"
      ],
      "ObservedRegion": [
        "Earth.Magnetosheath",
        "Earth.Magnetosphere",
        "Earth.Magnetosphere.Magnetotail",
        "Earth.Magnetosphere.Main",
        "Earth.Magnetosphere.RadiationBelt",
        "Earth.NearSurface.EquatorialRegion",
        "Earth.NearSurface.Plasmasphere",
        "Heliosphere.NearEarth"
      ],
      "_ObservedRegion": "Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ObservedRegion.json",
      "ProcessingLevel": null,
      "_ProcessingLevel": "Processing level is not available in the master file; it should be there instead of, say, https://github.com/rweigel/cdawmeta-spase/blob/main/ProcessingLevel.json",
      "InstrumentID": [
        "spase://SMWG/Instrument/MMS/4/FIELDS/FGM",
        "spase://SMWG/Instrument/MMS/4/HotPlasmaCompositionAnalyzer"
      ],
      "MeasurementType": [
        "EnergeticParticles",
        "MagneticField"
      ],
      "Parameter2": [
        {
          "Name": "UTC converted from TAI time",
          "ParameterKey": "Epoch",
          "Description": "CATDESC: 'Start time for the Spin'. Notes not in Master CDF: 'The units are the units in CDF files. For other web services, this variable is may be represented as a time string.'",
          "Units": "ns",
          "Support": {
            "Qualifier": "Scalar",
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "Delta start time",
          "ParameterKey": "Epoch_MINUS",
          "Description": "Master CDF CATDESC: 'Delta start time for the record from the central time'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "ms"
        },
        {
          "Name": "Delta stop time",
          "ParameterKey": "Epoch_PLUS",
          "Description": "Master CDF CATDESC: 'Delta stop time for the record from the central time'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "ms"
        },
        {
          "Name": "Spin Number",
          "ParameterKey": "mms4_hpca_spin_number",
          "Description": "Master CDF CATDESC: 'Spin Number for each HPCA half-spin'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": 0
        },
        {
          "Name": "Sweep Table Number",
          "ParameterKey": "mms4_hpca_sweep_table_number",
          "Description": "Master CDF CATDESC: 'Sweep Table Index as defined in the HPCA Science Algorithm Document'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": 255
        },
        {
          "Name": "Science Mode Number",
          "ParameterKey": "mms4_hpca_science_mode",
          "Description": "Master CDF CATDESC: 'Science Mode Value as defined in the HPCA Science Algorithm Document'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": 255
        },
        {
          "Name": "Number Density Hydrogen+",
          "ParameterKey": "mms4_hpca_hplus_number_density",
          "Description": "Master CDF CATDESC: 'Number Density Hydrogen+ for each HPCA half-spin'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "cm^-3",
          "FillValue": -1e+31
        },
        {
          "Name": "Ion Bulk Velocity Hydrogen+",
          "ParameterKey": "mms4_hpca_hplus_ion_bulk_velocity",
          "Description": "Master CDF CATDESC: '---> Ion Bulk Velocity Hydrogen+ for each HPCA half-spin (x, y, z)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              3
            ]
          }
        },
        {
          "Name": "Scalar Temperature Hydrogen+",
          "ParameterKey": "mms4_hpca_hplus_scalar_temperature",
          "Description": "Master CDF CATDESC: '---> Scalar Temperature Hydrogen+ for each HPCA half-spin'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "eV",
          "FillValue": -1e+31
        },
        {
          "Name": "mms4_hpca_hplus_ion_pressure",
          "ParameterKey": "mms4_hpca_hplus_ion_pressure",
          "Description": "Master CDF CATDESC: '---> (no CDAWeb plots) Ion Pressure Tensor Hydrogen+ for each HPCA half-spin (xx,yx,zx,xy,yy,zy,xz,yz,zz)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "nPa",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              3,
              3
            ]
          }
        },
        {
          "Name": "Ion Temp. Tensor Hydrogen+",
          "ParameterKey": "mms4_hpca_hplus_temperature_tensor",
          "Description": "Master CDF CATDESC: '---> (no CDAWeb plots) Ion Temp. Tensor Hydrogen+ for each HPCA half-spin (xx,yx,zx,xy,yy,zy,xz,yz,zz)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "eV",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              3,
              3
            ]
          }
        },
        {
          "Name": "Number Density Helium+",
          "ParameterKey": "mms4_hpca_heplus_number_density",
          "Description": "Master CDF CATDESC: 'Number Density Helium+ for each HPCA half-spin'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "cm^-3",
          "FillValue": -1e+31
        },
        {
          "Name": "Ion Bulk Velocity Helium+",
          "ParameterKey": "mms4_hpca_heplus_ion_bulk_velocity",
          "Description": "Master CDF CATDESC: '---> Ion Bulk Velocity Helium+ for each HPCA half-spin (x, y, z)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              3
            ]
          }
        },
        {
          "Name": "Scalar Temperature Helium+",
          "ParameterKey": "mms4_hpca_heplus_scalar_temperature",
          "Description": "Master CDF CATDESC: '---> Scalar Temperature Helium+ for each HPCA half-spin'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "eV",
          "FillValue": -1e+31
        },
        {
          "Name": "Ion Pressure Tensor Helium+",
          "ParameterKey": "mms4_hpca_heplus_ion_pressure",
          "Description": "Master CDF CATDESC: '---> (no CDAWeb plots) Ion Pressure Tensor Helium+ for each HPCA half-spin (xx,yx,zx,xy,yy,zy,xz,yz,zz)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "nPa",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              3,
              3
            ]
          }
        },
        {
          "Name": "Ion Temp. Tensor Helium+",
          "ParameterKey": "mms4_hpca_heplus_temperature_tensor",
          "Description": "Master CDF CATDESC: '---> (no CDAWeb plots) Ion Temp. Tensor Helium+ for each HPCA half-spin (xx,yx,zx,xy,yy,zy,xz,yz,zz)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "eV",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              3,
              3
            ]
          }
        },
        {
          "Name": "Number Density Helium++",
          "ParameterKey": "mms4_hpca_heplusplus_number_density",
          "Description": "Master CDF CATDESC: 'Number Density Helium++ for each HPCA half-spin'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "cm^-3",
          "FillValue": -1e+31
        },
        {
          "Name": "Ion Bulk Velocity Helium++",
          "ParameterKey": "mms4_hpca_heplusplus_ion_bulk_velocity",
          "Description": "Master CDF CATDESC: '---> Ion Bulk Velocity Helium++ for each HPCA half-spin (x, y, z)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              3
            ]
          }
        },
        {
          "Name": "Scalar Temperature Helium++",
          "ParameterKey": "mms4_hpca_heplusplus_scalar_temperature",
          "Description": "Master CDF CATDESC: '---> Scalar Temperature Helium++ for each HPCA half-spin'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "eV",
          "FillValue": -1e+31
        },
        {
          "Name": "Ion Pressure Tensor Helium++",
          "ParameterKey": "mms4_hpca_heplusplus_ion_pressure",
          "Description": "Master CDF CATDESC: '---> (no CDAWeb plots) Ion Pressure Tensor Helium++ for each HPCA half-spin (xx,yx,zx,xy,yy,zy,xz,yz,zz)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "nPa",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              3,
              3
            ]
          }
        },
        {
          "Name": "Ion Temp. Tensor Helium++",
          "ParameterKey": "mms4_hpca_heplusplus_temperature_tensor",
          "Description": "Master CDF CATDESC: '---> (no CDAWeb plots) Ion Temp. Tensor Helium++ for each HPCA half-spin (xx,yx,zx,xy,yy,zy,xz,yz,zz)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "eV",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              3,
              3
            ]
          }
        },
        {
          "Name": "Number Density Oxygen+",
          "ParameterKey": "mms4_hpca_oplus_number_density",
          "Description": "Master CDF CATDESC: 'Number Density Oxygen+ for each HPCA half-spin'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "cm^-3",
          "FillValue": -1e+31
        },
        {
          "Name": "Ion Bulk Velocity Oxygen+",
          "ParameterKey": "mms4_hpca_oplus_ion_bulk_velocity",
          "Description": "Master CDF CATDESC: '---> Ion Bulk Velocity Oxygen+ for each HPCA half-spin (x, y, z)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              3
            ]
          }
        },
        {
          "Name": "Scalar Temperature Oxygen+",
          "ParameterKey": "mms4_hpca_oplus_scalar_temperature",
          "Description": "Master CDF CATDESC: '---> Scalar Temperature Oxygen+ for each HPCA half-spin'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "eV",
          "FillValue": -1e+31
        },
        {
          "Name": "Ion Pressure Tensor Oxygen+",
          "ParameterKey": "mms4_hpca_oplus_ion_pressure",
          "Description": "Master CDF CATDESC: '---> (no CDAWeb plots) Ion Pressure Tensor Oxygen+ for each HPCA half-spin (xx,yx,zx,xy,yy,zy,xz,yz,zz)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "nPa",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              3,
              3
            ]
          }
        },
        {
          "Name": "Ion Temp. Tensor Oxygen+",
          "ParameterKey": "mms4_hpca_oplus_temperature_tensor",
          "Description": "Master CDF CATDESC: '---> (no CDAWeb plots) Ion Temp. Tensor Oxygen+ for each HPCA half-spin (xx,yx,zx,xy,yy,zy,xz,yz,zz)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "eV",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              3,
              3
            ]
          }
        },
        {
          "Name": "Magnetic field vector in DMPA plus Btotal (8 or 16 S/s)",
          "ParameterKey": "mms4_hpca_B_GSE_spin_avg",
          "Description": "Master CDF CATDESC: 'Magnetic field vector in DMPA plus Btotal (8 or 16 S/s) for each HPCA half-spin (x, y, z, total)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "nT",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              4
            ]
          }
        },
        {
          "Name": "Magnetic field vector in GSM plus Btotal (8 or 16 S/s)",
          "ParameterKey": "mms4_hpca_B_GSM_spin_avg",
          "Description": "Master CDF CATDESC: '---> Magnetic field vector in GSM plus Btotal (8 or 16 S/s) for each HPCA half-spin (x, y, z, total)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "nT",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              4
            ]
          }
        },
        {
          "Name": "Bulk Velocity in GSM for H+",
          "ParameterKey": "mms4_hpca_hplus_ion_bulk_velocity_GSM",
          "Description": "Master CDF CATDESC: 'Bulk Velocity in GSM for H+ for each HPCA half-spin (x, y, z)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              3
            ]
          }
        },
        {
          "Name": "Tperp H+",
          "ParameterKey": "mms4_hpca_hplus_tperp",
          "Description": "Master CDF CATDESC: '---> Tperp H+ for each HPCA half-spin'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "eV",
          "FillValue": -1e+31
        },
        {
          "Name": "Tparallel H+",
          "ParameterKey": "mms4_hpca_hplus_tparallel",
          "Description": "Master CDF CATDESC: '---> Tparallel H+ for each HPCA half-spin'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "eV",
          "FillValue": -1e+31
        },
        {
          "Name": "Vperp vector plus Magnitude for H+",
          "ParameterKey": "mms4_hpca_hplus_vperp",
          "Description": "Master CDF CATDESC: '---> Vperp vector plus Magnitude for H+ for each HPCA half-spin (x, y, z, total)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              4
            ]
          }
        },
        {
          "Name": "Vparallel vector plus Magnitude for H+",
          "ParameterKey": "mms4_hpca_hplus_vparallel",
          "Description": "Master CDF CATDESC: '---> Vparallel vector plus Magnitude for H+ for each HPCA half-spin (x, y, z, total)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              4
            ]
          }
        },
        {
          "Name": "Vperp vector plus Magnitude in GSM for H+",
          "ParameterKey": "mms4_hpca_hplus_vperp_GSM",
          "Description": "Master CDF CATDESC: '---> Vperp vector plus Magnitude in GSM for H+ for each HPCA half-spin (x, y, z, total)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              4
            ]
          }
        },
        {
          "Name": "Vparallel vector plus Magnitude in GSM for H+",
          "ParameterKey": "mms4_hpca_hplus_vparallel_GSM",
          "Description": "Master CDF CATDESC: '---> Vparallel vector plus Magnitude in GSM for H+ for each HPCA half-spin (x, y, z, total)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              4
            ]
          }
        },
        {
          "Name": "Bulk Velocity in GSM for He+",
          "ParameterKey": "mms4_hpca_heplus_ion_bulk_velocity_GSM",
          "Description": "Master CDF CATDESC: 'Bulk Velocity in GSM for He+ for each HPCA half-spin (x, y, z)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              3
            ]
          }
        },
        {
          "Name": "Tperp He+",
          "ParameterKey": "mms4_hpca_heplus_tperp",
          "Description": "Master CDF CATDESC: '---> Tperp He+ for each HPCA half-spin'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "eV",
          "FillValue": -1e+31
        },
        {
          "Name": "Tparallel He+",
          "ParameterKey": "mms4_hpca_heplus_tparallel",
          "Description": "Master CDF CATDESC: '---> Tparallel He+ for each HPCA half-spin'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "eV",
          "FillValue": -1e+31
        },
        {
          "Name": "Vperp vector plus Magnitude for He+",
          "ParameterKey": "mms4_hpca_heplus_vperp",
          "Description": "Master CDF CATDESC: '---> Vperp vector plus Magnitude for He+ for each HPCA half-spin (x, y, z, total)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              4
            ]
          }
        },
        {
          "Name": "Vparallel vector plus Magnitude for He+",
          "ParameterKey": "mms4_hpca_heplus_vparallel",
          "Description": "Master CDF CATDESC: '---> Vparallel vector plus Magnitude for He+ for each HPCA half-spin (x, y, z, total)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              4
            ]
          }
        },
        {
          "Name": "Vperp vector plus Magnitude in GSM for He+",
          "ParameterKey": "mms4_hpca_heplus_vperp_GSM",
          "Description": "Master CDF CATDESC: '---> Vperp vector plus Magnitude in GSM for He+ for each HPCA half-spin (x, y, z, total)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              4
            ]
          }
        },
        {
          "Name": "Vparallel vector plus Magnitude in GSM for He+",
          "ParameterKey": "mms4_hpca_heplus_vparallel_GSM",
          "Description": "Master CDF CATDESC: '---> Vparallel vector plus Magnitude in GSM for He+ for each HPCA half-spin (x, y, z, total)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              4
            ]
          }
        },
        {
          "Name": "Bulk Velocity in GSM for He++",
          "ParameterKey": "mms4_hpca_heplusplus_ion_bulk_velocity_GSM",
          "Description": "Master CDF CATDESC: 'Bulk Velocity in GSM for He++ for each HPCA half-spin (x, y, z)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              3
            ]
          }
        },
        {
          "Name": "Tperp He++",
          "ParameterKey": "mms4_hpca_heplusplus_tperp",
          "Description": "Master CDF CATDESC: '---> Tperp He++ for each HPCA half-spin'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "eV",
          "FillValue": -1e+31
        },
        {
          "Name": "Tparallel He++",
          "ParameterKey": "mms4_hpca_heplusplus_tparallel",
          "Description": "Master CDF CATDESC: '---> Tparallel He++ for each HPCA half-spin'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "eV",
          "FillValue": -1e+31
        },
        {
          "Name": "Vperp vector plus Magnitude for He++",
          "ParameterKey": "mms4_hpca_heplusplus_vperp",
          "Description": "Master CDF CATDESC: 'Vperp vector plus Magnitude for He++ for each HPCA half-spin (x, y, z, total)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              4
            ]
          }
        },
        {
          "Name": "Vparallel vector plus Magnitude for He++",
          "ParameterKey": "mms4_hpca_heplusplus_vparallel",
          "Description": "Master CDF CATDESC: '---> Vparallel vector plus Magnitude for He++ for each HPCA half-spin (x, y, z, total)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              4
            ]
          }
        },
        {
          "Name": "Vperp vector plus Magnitude in GSM for He++",
          "ParameterKey": "mms4_hpca_heplusplus_vperp_GSM",
          "Description": "Master CDF CATDESC: 'Vperp vector plus Magnitude in GSM for He++ for each HPCA half-spin (x, y, z, total)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              4
            ]
          }
        },
        {
          "Name": "Vparallel vector plus Magnitude in GSM for He++",
          "ParameterKey": "mms4_hpca_heplusplus_vparallel_GSM",
          "Description": "Master CDF CATDESC: 'Vparallel vector plus Magnitude in GSM for He++ for each HPCA half-spin (x, y, z, total)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              4
            ]
          }
        },
        {
          "Name": "Bulk Velocity in GSM for O+",
          "ParameterKey": "mms4_hpca_oplus_ion_bulk_velocity_GSM",
          "Description": "Master CDF CATDESC: 'Bulk Velocity in GSM for O+ for each HPCA half-spin (x, y, z)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              3
            ]
          }
        },
        {
          "Name": "Tperp O+",
          "ParameterKey": "mms4_hpca_oplus_tperp",
          "Description": "Master CDF CATDESC: '---> Tperp O+ for each HPCA half-spin'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "eV",
          "FillValue": -1e+31
        },
        {
          "Name": "Tparallel O+",
          "ParameterKey": "mms4_hpca_oplus_tparallel",
          "Description": "Master CDF CATDESC: '---> Tparallel O+ for each HPCA half-spin'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "eV",
          "FillValue": -1e+31
        },
        {
          "Name": "Vperp vector plus Magnitude for O+",
          "ParameterKey": "mms4_hpca_oplus_vperp",
          "Description": "Master CDF CATDESC: '---> Vperp vector plus Magnitude for O+ for each HPCA half-spin (x, y, z, total)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              4
            ]
          }
        },
        {
          "Name": "Vparallel vector plus Magnitude for O+",
          "ParameterKey": "mms4_hpca_oplus_vparallel",
          "Description": "Master CDF CATDESC: '---> Vparallel vector plus Magnitude for O+ for each HPCA half-spin (x, y, z, total)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              4
            ]
          }
        },
        {
          "Name": "Vperp vector plus Magnitude in GSM for O+",
          "ParameterKey": "mms4_hpca_oplus_vperp_GSM",
          "Description": "Master CDF CATDESC: '---> Vperp vector plus Magnitude in GSM for O+ for each HPCA half-spin (x, y, z, total)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              4
            ]
          }
        },
        {
          "Name": "Vparallel vector plus Magnitude in GSM for O+",
          "ParameterKey": "mms4_hpca_oplus_vparallel_GSM",
          "Description": "Master CDF CATDESC: '--->Vparallel vector plus Magnitude in GSM for O+ for each HPCA half-spin (x, y, z, total)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              4
            ]
          }
        },
        {
          "Name": "MCP_VMON_MIN_converted",
          "ParameterKey": "mms4_hpca_MCP_VMON_MIN_converted",
          "Description": "Master CDF CATDESC: 'LIMITS - MCP_VMON_MIN_converted'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": 1e+31
        },
        {
          "Name": "TOF_VMON_MIN_converted",
          "ParameterKey": "mms4_hpca_TOF_VMON_MIN_converted",
          "Description": "Master CDF CATDESC: 'LIMITS - TOF_VMON_MIN_converted'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": 1e+31
        }
      ]
    }
  }
}