{
  "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_fpi_fast_l2_des-dist_00000000_v01.json (from all.xml)",
    "NumericalData": {
      "ResourceID": "spase://NASA/NumericalData/MMS/4/FastPlasmaInvestigation/DES/Fast/Level2/Distribution/PT4.5S",
      "_ResourceID": "Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ResourceID.json",
      "ResourceHeader": {
        "ResourceName": "MMS Satellite Number 4 Dual Electron Spectrometer Fast Survey-resolution instrument distributions",
        "_ResourceName": "Source: Master/CDFglobalAttributes/Logical_source_description",
        "AlternateName": "mms4_fpi_fast_l2_des-dist",
        "_AlternateName": "Source: Master/CDFglobalAttributes/Logical_source",
        "Description": " ",
        "_Description": "Source: Master/CDFglobalAttributes/TEXT",
        "_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/fpi",
            "Name": "Data Caveats and Current Release Notes at LASP MMS SDC",
            "Description": "FPI ",
            "_Note": "URL also in all.xml. Using master."
          },
          {
            "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."
          },
          {
            "Name": "The MMS Mission home page at the Science Data Center (SDC) LASP, UC Boulder",
            "URL": "https://lasp.colorado.edu/mms/sdc/public/",
            "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": "Source: InformationURL.json"
          },
          {
            "Name": "NASA Web Page providing Inforamtion for the Magnetospheric Multiscale (MMS) Fast Plasma Investigation (FPI) Instrument",
            "URL": "https://www.nasa.gov/mission_pages/mms/spacecraft/mms-instruments.html#fpi",
            "Description": "NASA Web Page providing an Overview of the Magnetospheric Multiscale (MMS) Fast Plasma Investigation (FPI) Instrument",
            "_Note": "Source: InformationURL.json"
          }
        ]
      },
      "DOI": "https://doi.org/10.48322/4pvc-cs50",
      "_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; C. Pollock and B. Giles at SwRI; NASA/GSFC",
          "Format": [
            "CDF"
          ],
          "Style": "Listing",
          "AccessURL": {
            "Name": "HTTPS from SPDF",
            "URL": "https://cdaweb.gsfc.nasa.gov/pub/data/mms/mms4/fpi/fast/l2/des-dist",
            "Description": "In CDF via HTTP from CDAWeb",
            "AccessFilenameTemplate": "mms4_fpi_fast_l2_des-dist_%Y%m%d%H%M%S_%Q.cdf",
            "AccessDirectoryTemplate": "%Y/%m",
            "ProductKey": "MMS4_FPI_FAST_L2_DES-DIST"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: J. Burch; C. Pollock and B. Giles at SwRI; NASA/GSFC",
          "Format": [
            "CDF"
          ],
          "Style": "Listing",
          "AccessURL": {
            "Name": "FTPS from SPDF",
            "URL": "ftps://cdaweb.gsfc.nasa.gov/pub/data/mms/mms4/fpi/fast/l2/des-dist",
            "Description": "In CDF via HTTP from CDAWeb",
            "AccessFilenameTemplate": "mms4_fpi_fast_l2_des-dist_%Y%m%d%H%M%S_%Q.cdf",
            "AccessDirectoryTemplate": "%Y/%m",
            "ProductKey": "MMS4_FPI_FAST_L2_DES-DIST"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: J. Burch; C. Pollock and B. Giles at SwRI; NASA/GSFC",
          "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_FPI_FAST_L2_DES-DIST"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: J. Burch; C. Pollock and B. Giles at SwRI; NASA/GSFC",
          "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_FPI_FAST_L2_DES-DIST",
            "Style": "WebService",
            "ProductKey": "MMS4_FPI_FAST_L2_DES-DIST",
            "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; C. Pollock and B. Giles at SwRI; NASA/GSFC",
          "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_FPI_FAST_L2_DES-DIST/clientLibraryExample/",
            "ProductKey": "MMS4_FPI_FAST_L2_DES-DIST",
            "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; C. Pollock and B. Giles at SwRI; NASA/GSFC",
          "Format": [
            "HTML"
          ],
          "AccessURL": {
            "Name": "4D Orbit Viewer",
            "URL": "https://sscweb.gsfc.nasa.gov/4dorbit/?sc=MMS4_FPI_FAST_L2_DES-DIST",
            "ProductKey": "MMS4_FPI_FAST_L2_DES-DIST",
            "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; C. Pollock and B. Giles at SwRI; NASA/GSFC",
          "Format": [
            "CSV",
            "JSON",
            "Binary"
          ],
          "AccessURL": {
            "Name": "CDAWeb HAPI Server",
            "URL": "https://hapi-server.org/servers/#server=CDAWeb&dataset=MMS4_FPI_FAST_L2_DES-DIST",
            "Style": "HAPI",
            "ProductKey": "MMS4_FPI_FAST_L2_DES-DIST",
            "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; C. Pollock and B. Giles at SwRI; NASA/GSFC",
          "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_FPI_FAST_L2_DES-DIST&return=script",
            "Style": "HAPI",
            "ProductKey": "MMS4_FPI_FAST_L2_DES-DIST",
            "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; C. Pollock and B. Giles at SwRI; NASA/GSFC",
          "Format": [
            "PNG",
            "PDF",
            "SVG"
          ],
          "AccessURL": {
            "Name": "HAPI visualizations",
            "URL": "https://hapi-server.org/plot/?server=https://cdaweb.gsfc.nasa.gov/hapi&dataset=MMS4_FPI_FAST_L2_DES-DIST&format=gallery",
            "Style": "x_Visualization",
            "ProductKey": "MMS4_FPI_FAST_L2_DES-DIST",
            "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": "2026-06-13T23:59:56Z"
        },
        "_TemporalDescription": "Generated from all.xml/@timerange_start and all.xml/@timerange_stop",
        "Cadence": "PT4.500002S",
        "_Cadence": "Counts based on variable 'Epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/mms/mms4/fpi/fast/l2/des-dist/2015/09/mms4_fpi_fast_l2_des-dist_20150901080000_v3.4.0.cdf. The most common cadence, 4500002000 [ns] = PT4.500002S, occurred for 39.2045% of the 69 timesteps. "
      },
      "Keyword": [
        "MMS Satellite Number 4 (from all.xml/observatory/description/@short)",
        "Dual Electron Spectrometers (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)",
        "Fast_L2_DES-Dist (from Master/CDFglobalAttributes/Data_type)",
        "Fast Mode L2 Electron Distributions (from Master/CDFglobalAttributes/Data_type)",
        "DES (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/1/FastPlasmaInstrument/DES",
      "MeasurementType": "EnergeticParticles",
      "Parameter2": [
        {
          "Name": "Epoch",
          "ParameterKey": "Epoch",
          "Description": "CATDESC: 'Default time'. 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": "FPI4/DES Electron SkyMap 11.6 eV",
          "ParameterKey": "mms4_des_dist_fast",
          "Description": "Master CDF CATDESC: 'MMS4 FPI/DES fast sky-map instrument distribution - 11.6 eV (E1) using averaged even/odd steps'. Master CDF VAR_NOTES: 'Az bin: sector ind=00 looks \"after\" (spin-phase) Sun, ..., sector ind=31 looks \"before\" Sun dir.  Head field-of-view: pixel index=00 looks to zenith, ..., pixel index=15 looks to nadir.  FPI operations nominally bin data from 64 energy filters into 32 pairwise energy bins, indexed 0-31.  Nominally, bins are indexed in increasing energy order.  See FPI docs for details.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "phase-space density",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              32,
              16,
              32
            ]
          }
        },
        {
          "Name": "FPI4/DES Electron SkyMap 11.6 eV",
          "ParameterKey": "mms4_des_dist_fast1_movie",
          "Description": "Master CDF CATDESC: '---> Movie - 11.6 eV'. Master CDF VAR_NOTES: 'Az bin: sector ind=00 looks \"after\" (spin-phase) Sun, ..., sector ind=31 looks \"before\" Sun dir.  Head field-of-view: pixel index=00 looks to zenith, ..., pixel index=15 looks to nadir.  FPI operations nominally bin data from 64 energy filters into 32 pairwise energy bins, indexed 0-31.  Nominally, bins are indexed in increasing energy order.  See FPI docs for details.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "phase-space density",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              32,
              16,
              32
            ]
          }
        },
        {
          "Name": "FPI4/DES Electron SkyMap 40.4 eV",
          "ParameterKey": "mms4_des_dist_fast6",
          "Description": "Master CDF CATDESC: 'MMS4 FPI/DES fast sky-map instrument distribution - 40.4 eV (E6) using averaged even/odd steps'. Master CDF VAR_NOTES: 'Az bin: sector ind=00 looks \"after\" (spin-phase) Sun, ..., sector ind=31 looks \"before\" Sun dir.  Head field-of-view: pixel index=00 looks to zenith, ..., pixel index=15 looks to nadir.  FPI operations nominally bin data from 64 energy filters into 32 pairwise energy bins, indexed 0-31.  Nominally, bins are indexed in increasing energy order.  See FPI docs for details.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "phase-space density",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              32,
              16,
              32
            ]
          }
        },
        {
          "Name": "FPI4/DES Electron SkyMap 40.4 eV",
          "ParameterKey": "mms4_des_dist_fast6_movie",
          "Description": "Master CDF CATDESC: '---> Movie - 40.4 eV'. Master CDF VAR_NOTES: 'Az bin: sector ind=00 looks \"after\" (spin-phase) Sun, ..., sector ind=31 looks \"before\" Sun dir.  Head field-of-view: pixel index=00 looks to zenith, ..., pixel index=15 looks to nadir.  FPI operations nominally bin data from 64 energy filters into 32 pairwise energy bins, indexed 0-31.  Nominally, bins are indexed in increasing energy order.  See FPI docs for details.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "phase-space density",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              32,
              16,
              32
            ]
          }
        },
        {
          "Name": "FPI4/DES Electron SkyMap 85.1 eV",
          "ParameterKey": "mms4_des_dist_fast9",
          "Description": "Master CDF CATDESC: 'MMS4 FPI/DES fast sky-map instrument distribution - 85.1 eV (E9) using averaged even/odd steps'. Master CDF VAR_NOTES: 'Az bin: sector ind=00 looks \"after\" (spin-phase) Sun, ..., sector ind=31 looks \"before\" Sun dir.  Head field-of-view: pixel index=00 looks to zenith, ..., pixel index=15 looks to nadir.  FPI operations nominally bin data from 64 energy filters into 32 pairwise energy bins, indexed 0-31.  Nominally, bins are indexed in increasing energy order.  See FPI docs for details.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "phase-space density",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              32,
              16,
              32
            ]
          }
        },
        {
          "Name": "FPI4/DES Electron SkyMap 85.1 eV",
          "ParameterKey": "mms4_des_dist_fast9_movie",
          "Description": "Master CDF CATDESC: '---> Movie - 85.1 eV'. Master CDF VAR_NOTES: 'Az bin: sector ind=00 looks \"after\" (spin-phase) Sun, ..., sector ind=31 looks \"before\" Sun dir.  Head field-of-view: pixel index=00 looks to zenith, ..., pixel index=15 looks to nadir.  FPI operations nominally bin data from 64 energy filters into 32 pairwise energy bins, indexed 0-31.  Nominally, bins are indexed in increasing energy order.  See FPI docs for details.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "phase-space density",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              32,
              16,
              32
            ]
          }
        },
        {
          "Name": "FPI4/DES Electron SkyMap 179 eV",
          "ParameterKey": "mms4_des_dist_fast12",
          "Description": "Master CDF CATDESC: 'MMS4 FPI/DES fast sky-map instrument distribution - 179 eV (E12) using averaged even/odd steps'. Master CDF VAR_NOTES: 'Az bin: sector ind=00 looks \"after\" (spin-phase) Sun, ..., sector ind=31 looks \"before\" Sun dir.  Head field-of-view: pixel index=00 looks to zenith, ..., pixel index=15 looks to nadir.  FPI operations nominally bin data from 64 energy filters into 32 pairwise energy bins, indexed 0-31.  Nominally, bins are indexed in increasing energy order.  See FPI docs for details.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "phase-space density",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              32,
              16,
              32
            ]
          }
        },
        {
          "Name": "FPI4/DES Electron SkyMap 179 eV",
          "ParameterKey": "mms4_des_dist_fast12_movie",
          "Description": "Master CDF CATDESC: '---> Movie - 179 eV'. Master CDF VAR_NOTES: 'Az bin: sector ind=00 looks \"after\" (spin-phase) Sun, ..., sector ind=31 looks \"before\" Sun dir.  Head field-of-view: pixel index=00 looks to zenith, ..., pixel index=15 looks to nadir.  FPI operations nominally bin data from 64 energy filters into 32 pairwise energy bins, indexed 0-31.  Nominally, bins are indexed in increasing energy order.  See FPI docs for details.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "phase-space density",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              32,
              16,
              32
            ]
          }
        },
        {
          "Name": "FPI4/DES Electron SkyMap 295 eV",
          "ParameterKey": "mms4_des_dist_fast14",
          "Description": "Master CDF CATDESC: 'MMS4 FPI/DES fast sky-map instrument distribution - 295 eV (E14) using averaged even/odd steps'. Master CDF VAR_NOTES: 'Az bin: sector ind=00 looks \"after\" (spin-phase) Sun, ..., sector ind=31 looks \"before\" Sun dir.  Head field-of-view: pixel index=00 looks to zenith, ..., pixel index=15 looks to nadir.  FPI operations nominally bin data from 64 energy filters into 32 pairwise energy bins, indexed 0-31.  Nominally, bins are indexed in increasing energy order.  See FPI docs for details.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "phase-space density",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              32,
              16,
              32
            ]
          }
        },
        {
          "Name": "FPI4/DES Electron SkyMap 295 eV",
          "ParameterKey": "mms4_des_dist_fast14_movie",
          "Description": "Master CDF CATDESC: '---> Movie - 295 eV'. Master CDF VAR_NOTES: 'Az bin: sector ind=00 looks \"after\" (spin-phase) Sun, ..., sector ind=31 looks \"before\" Sun dir.  Head field-of-view: pixel index=00 looks to zenith, ..., pixel index=15 looks to nadir.  FPI operations nominally bin data from 64 energy filters into 32 pairwise energy bins, indexed 0-31.  Nominally, bins are indexed in increasing energy order.  See FPI docs for details.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "phase-space density",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              32,
              16,
              32
            ]
          }
        },
        {
          "Name": "FPI4/DES Electron SkyMap 485 eV",
          "ParameterKey": "mms4_des_dist_fast16",
          "Description": "Master CDF CATDESC: 'MMS4 FPI/DES fast sky-map instrument distribution - 485 eV (E16) using averaged even/odd steps'. Master CDF VAR_NOTES: 'Az bin: sector ind=00 looks \"after\" (spin-phase) Sun, ..., sector ind=31 looks \"before\" Sun dir.  Head field-of-view: pixel index=00 looks to zenith, ..., pixel index=15 looks to nadir.  FPI operations nominally bin data from 64 energy filters into 32 pairwise energy bins, indexed 0-31.  Nominally, bins are indexed in increasing energy order.  See FPI docs for details.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "phase-space density",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              32,
              16,
              32
            ]
          }
        },
        {
          "Name": "FPI4/DES Electron SkyMap 485 eV",
          "ParameterKey": "mms4_des_dist_fast16_movie",
          "Description": "Master CDF CATDESC: '---> Movie - 485 eV'. Master CDF VAR_NOTES: 'Az bin: sector ind=00 looks \"after\" (spin-phase) Sun, ..., sector ind=31 looks \"before\" Sun dir.  Head field-of-view: pixel index=00 looks to zenith, ..., pixel index=15 looks to nadir.  FPI operations nominally bin data from 64 energy filters into 32 pairwise energy bins, indexed 0-31.  Nominally, bins are indexed in increasing energy order.  See FPI docs for details.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "phase-space density",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              32,
              16,
              32
            ]
          }
        },
        {
          "Name": "FPI4/DES Electron SkyMap 798 eV",
          "ParameterKey": "mms4_des_dist_fast18",
          "Description": "Master CDF CATDESC: 'MMS4 FPI/DES fast sky-map instrument distribution - 798 eV (E18) using averaged even/odd steps'. Master CDF VAR_NOTES: 'Az bin: sector ind=00 looks \"after\" (spin-phase) Sun, ..., sector ind=31 looks \"before\" Sun dir.  Head field-of-view: pixel index=00 looks to zenith, ..., pixel index=15 looks to nadir.  FPI operations nominally bin data from 64 energy filters into 32 pairwise energy bins, indexed 0-31.  Nominally, bins are indexed in increasing energy order.  See FPI docs for details.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "phase-space density",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              32,
              16,
              32
            ]
          }
        },
        {
          "Name": "FPI4/DES Electron SkyMap 798 eV",
          "ParameterKey": "mms4_des_dist_fast18_movie",
          "Description": "Master CDF CATDESC: '---> Movie - 798 eV'. Master CDF VAR_NOTES: 'Az bin: sector ind=00 looks \"after\" (spin-phase) Sun, ..., sector ind=31 looks \"before\" Sun dir.  Head field-of-view: pixel index=00 looks to zenith, ..., pixel index=15 looks to nadir.  FPI operations nominally bin data from 64 energy filters into 32 pairwise energy bins, indexed 0-31.  Nominally, bins are indexed in increasing energy order.  See FPI docs for details.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "phase-space density",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              32,
              16,
              32
            ]
          }
        },
        {
          "Name": "FPI4/DES Electron SkyMap 1310 eV",
          "ParameterKey": "mms4_des_dist_fast20",
          "Description": "Master CDF CATDESC: 'MMS4 FPI/DES fast sky-map instrument distribution - 1310 eV (E20) using averaged even/odd steps'. Master CDF VAR_NOTES: 'Az bin: sector ind=00 looks \"after\" (spin-phase) Sun, ..., sector ind=31 looks \"before\" Sun dir.  Head field-of-view: pixel index=00 looks to zenith, ..., pixel index=15 looks to nadir.  FPI operations nominally bin data from 64 energy filters into 32 pairwise energy bins, indexed 0-31.  Nominally, bins are indexed in increasing energy order.  See FPI docs for details.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "phase-space density",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              32,
              16,
              32
            ]
          }
        },
        {
          "Name": "FPI4/DES Electron SkyMap 1310 eV",
          "ParameterKey": "mms4_des_dist_fast20_movie",
          "Description": "Master CDF CATDESC: '---> Movie - 1310 eV'. Master CDF VAR_NOTES: 'Az bin: sector ind=00 looks \"after\" (spin-phase) Sun, ..., sector ind=31 looks \"before\" Sun dir.  Head field-of-view: pixel index=00 looks to zenith, ..., pixel index=15 looks to nadir.  FPI operations nominally bin data from 64 energy filters into 32 pairwise energy bins, indexed 0-31.  Nominally, bins are indexed in increasing energy order.  See FPI docs for details.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "phase-space density",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              32,
              16,
              32
            ]
          }
        },
        {
          "Name": "FPI4/DES Electron SkyMap 2770 eV",
          "ParameterKey": "mms4_des_dist_fast23",
          "Description": "Master CDF CATDESC: 'MMS4 FPI/DES fast sky-map instrument distribution - 2770 eV (E23) using averaged even/odd steps'. Master CDF VAR_NOTES: 'Az bin: sector ind=00 looks \"after\" (spin-phase) Sun, ..., sector ind=31 looks \"before\" Sun dir.  Head field-of-view: pixel index=00 looks to zenith, ..., pixel index=15 looks to nadir.  FPI operations nominally bin data from 64 energy filters into 32 pairwise energy bins, indexed 0-31.  Nominally, bins are indexed in increasing energy order.  See FPI docs for details.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "phase-space density",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              32,
              16,
              32
            ]
          }
        },
        {
          "Name": "FPI4/DES Electron SkyMap 2770 eV",
          "ParameterKey": "mms4_des_dist_fast23_movie",
          "Description": "Master CDF CATDESC: '---> Movie - 2770 eV'. Master CDF VAR_NOTES: 'Az bin: sector ind=00 looks \"after\" (spin-phase) Sun, ..., sector ind=31 looks \"before\" Sun dir.  Head field-of-view: pixel index=00 looks to zenith, ..., pixel index=15 looks to nadir.  FPI operations nominally bin data from 64 energy filters into 32 pairwise energy bins, indexed 0-31.  Nominally, bins are indexed in increasing energy order.  See FPI docs for details.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "phase-space density",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              32,
              16,
              32
            ]
          }
        },
        {
          "Name": "FPI4/DES Electron SkyMap 5840 eV",
          "ParameterKey": "mms4_des_dist_fast26",
          "Description": "Master CDF CATDESC: 'MMS4 FPI/DES fast sky-map instrument distribution - 5840 eV (E26) using averaged even/odd steps'. Master CDF VAR_NOTES: 'Az bin: sector ind=00 looks \"after\" (spin-phase) Sun, ..., sector ind=31 looks \"before\" Sun dir.  Head field-of-view: pixel index=00 looks to zenith, ..., pixel index=15 looks to nadir.  FPI operations nominally bin data from 64 energy filters into 32 pairwise energy bins, indexed 0-31.  Nominally, bins are indexed in increasing energy order.  See FPI docs for details.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "phase-space density",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              32,
              16,
              32
            ]
          }
        },
        {
          "Name": "FPI4/DES Electron SkyMap 5840 eV",
          "ParameterKey": "mms4_des_dist_fast26_movie",
          "Description": "Master CDF CATDESC: '---> Movie - 5840 eV'. Master CDF VAR_NOTES: 'Az bin: sector ind=00 looks \"after\" (spin-phase) Sun, ..., sector ind=31 looks \"before\" Sun dir.  Head field-of-view: pixel index=00 looks to zenith, ..., pixel index=15 looks to nadir.  FPI operations nominally bin data from 64 energy filters into 32 pairwise energy bins, indexed 0-31.  Nominally, bins are indexed in increasing energy order.  See FPI docs for details.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "phase-space density",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              32,
              16,
              32
            ]
          }
        },
        {
          "Name": "FPI4/DES Electron SkyMap 26000 eV",
          "ParameterKey": "mms4_des_dist_fast32",
          "Description": "Master CDF CATDESC: 'MMS4 FPI/DES fast sky-map instrument distribution - 26000 eV (E32) using averaged even/odd steps'. Master CDF VAR_NOTES: 'Az bin: sector ind=00 looks \"after\" (spin-phase) Sun, ..., sector ind=31 looks \"before\" Sun dir.  Head field-of-view: pixel index=00 looks to zenith, ..., pixel index=15 looks to nadir.  FPI operations nominally bin data from 64 energy filters into 32 pairwise energy bins, indexed 0-31.  Nominally, bins are indexed in increasing energy order.  See FPI docs for details.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "phase-space density",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              32,
              16,
              32
            ]
          }
        },
        {
          "Name": "FPI4/DES Electron SkyMap 26000 eV",
          "ParameterKey": "mms4_des_dist_fast32_movie",
          "Description": "Master CDF CATDESC: '---> Movie - 26000 eV'. Master CDF VAR_NOTES: 'Az bin: sector ind=00 looks \"after\" (spin-phase) Sun, ..., sector ind=31 looks \"before\" Sun dir.  Head field-of-view: pixel index=00 looks to zenith, ..., pixel index=15 looks to nadir.  FPI operations nominally bin data from 64 energy filters into 32 pairwise energy bins, indexed 0-31.  Nominally, bins are indexed in increasing energy order.  See FPI docs for details.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "phase-space density",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              32,
              16,
              32
            ]
          }
        },
        {
          "Name": "MMS4 FPI/DES Fast Mode SkyMap distErr",
          "ParameterKey": "mms4_des_disterr_fast",
          "Description": "Master CDF CATDESC: '[Only List/Create in CDAWeb] MMS4 FPI/DES fast sky-map instrument distribution 1-sigma error'. Master CDF VAR_NOTES: 'Az bin: sector ind=00 looks \"after\" (spin-phase) Sun, ..., sector ind=31 looks \"before\" Sun dir.  Head field-of-view: pixel index=00 looks to zenith, ..., pixel index=15 looks to nadir.  FPI operations nominally bin data from 64 energy filters into 32 pairwise energy bins, indexed 0-31.  Nominally, bins are indexed in increasing energy order.  See FPI docs for details.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "phase-space density",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              32,
              16,
              32
            ]
          }
        },
        {
          "Name": "MMS4 FPI/DES dataQuality errorFlags",
          "ParameterKey": "mms4_des_errorflags_fast",
          "Description": "Master CDF CATDESC: 'MMS4 FPI/DES vector of data-quality indicators at fast survey-start time - 32-bit error flags'. Master CDF VAR_NOTES: 'Value of zero signifies no quality errors. For non-zero values: Bit-0 = manually flagged interval, Bit-1 = overcounting/saturation effects likely present in skymap'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "(0=good)",
          "FillValue": 4294967295
        },
        {
          "Name": "MMS4 FPI/DES compression flag",
          "ParameterKey": "mms4_des_compressionloss_fast",
          "Description": "Master CDF CATDESC: '---> MMS4 FPI/DES compression lossless/lossy indicator at survey-start time'. Master CDF VAR_NOTES: 'FPI/DES compression loss indicator,0=lossless, 1=lossy'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "0, 1",
          "FillValue": 255
        },
        {
          "Name": "MMS4 FPI/DES start Del-Phi count",
          "ParameterKey": "mms4_des_startdelphi_count_fast",
          "Description": "Master CDF CATDESC: '---> MMS4 FPI/DES Del-Phi (obs spin-phase) count at fast survey-start time'. Master CDF VAR_NOTES: 'Nominally, spin-phase counts range over [0000, 5759] cnts.  Each count represents 1/16 deg of observatory spin-phase.  Zero spin-phase count indicates obs +X-axis aligned with Sun.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "del-phi counts",
          "FillValue": 65535
        },
        {
          "Name": "MMS4 FPI/DES start Del-Phi angle",
          "ParameterKey": "mms4_des_startdelphi_angle_fast",
          "Description": "Master CDF CATDESC: '---> MMS4 FPI/DES Del-Phi (obs spin-phase) angle at fast survey-start time'. Master CDF VAR_NOTES: 'Nominally, spin-phase angles range over [0, 360) deg.  Each count represents 1/16 deg of observatory spin-phase.  Zero spin-phase angle indicates obs +X-axis aligned with Sun.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "deg",
          "FillValue": -1e+31
        },
        {
          "Name": "MMS4 FPI/DES avgf1counts",
          "ParameterKey": "mms4_des_avgf1counts_fast",
          "Description": "Master CDF CATDESC: 'MMS4 FPI/DES fast survey average f1 count values'. Master CDF VAR_NOTES: 'Average f1-count level as a function of energy'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "s^3/cm^6",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              32
            ]
          }
        },
        {
          "Name": "Theta",
          "ParameterKey": "mms4_des_theta_fast",
          "Description": "Master CDF CATDESC: 'MMS FPI/DES fast survey sky-map constant zenith angles'. Master CDF VAR_NOTES: 'Pixel zenith angles'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "deg",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              16
            ]
          }
        },
        {
          "Name": "MMS4 FPI/DES energy",
          "ParameterKey": "mms4_des_energy_fast",
          "Description": "Master CDF CATDESC: 'MMS4 FPI/DES fast survey sky-map energies'. Master CDF VAR_NOTES: 'Geometric mean of parity 0 and parity 1 energies in the 64-step FPI energy table'. 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": [
              32
            ]
          }
        },
        {
          "Name": "MMS4 FPI/DES delta energy",
          "ParameterKey": "mms4_des_energy_delta_fast",
          "Description": "Master CDF CATDESC: 'MMS4 FPI/DES fast survey sky-map delta energies'. Master CDF VAR_NOTES: 'Note that the deltas are provided to indicate that FPI is reporting the energy bin centers. These do not necessarily reflect the energy bandwidth that is sampled by FPI at a given energy step.'. 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": [
              32
            ]
          }
        },
        {
          "Name": "Phi",
          "ParameterKey": "mms4_des_phi_fast",
          "Description": "Master CDF CATDESC: 'MMS FPI/DES fast survey sky-map azimuth angles'. Master CDF VAR_NOTES: 'Azimuth angles'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "deg",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              32
            ]
          }
        }
      ]
    }
  }
}