{
  "startDate": "1981-09-16T05:20:12Z",
  "stopDate": "1984-06-28T23:14:11Z",
  "sampleStartDate": "1984-06-27T02:14:19Z",
  "sampleStopDate": "1984-06-27T23:59:55Z",
  "cadence": "PT8S",
  "x_cadence_fraction": 0.9872611464968153,
  "x_cadence_note": "Counts based on variable 'Epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/de/de1/orbit/or-at_cdaweb/1981/de1_pwi_or-at_19810916_v01.cdf. The most common cadence, 8000000000 [ns] = PT8S, occurred for 98.7261% of the 4185 timesteps. ",
  "maxRequestDuration": "PT1088H",
  "resourceURL": "https://cdaweb.gsfc.nasa.gov/misc/NotesD.html#DE1_PWI_OR-AT",
  "contact": "Donald Gurnett @ University Iowa",
  "resourceID": "https://doi.org/10.48322/wma0-gq05",
  "additionalMetadata": {
    "name": "SPASE",
    "contentURL": "https://spase-metadata.org/NASA/NumericalData/DE1/Ephemeris/PT8S.html"
  },
  "parameters": [
    {
      "name": "Time",
      "type": "isotime",
      "units": "UTC",
      "length": 30,
      "fill": null,
      "x_description": "NSSDC standard reference time",
      "x_cdf_NAME": "Epoch",
      "x_cdf_DataType": "CDF_TIME_TT2000"
    },
    {
      "name": "GEI_velocity",
      "type": "double",
      "x_cdf_DataType": "CDF_REAL4",
      "description": "GEI Satallite Velocity Vector",
      "fill": "-1.0E31",
      "units": "km/sec",
      "x_label": [
        "Vx_gei",
        "Vy_gei",
        "Vz_gei"
      ],
      "x_format": ".3f",
      "x_fractionDigits": "3",
      "x_cdf_FORMAT": "F7.3",
      "x_cdf_FIELDNAM": "GEI Velocity",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "Epoch",
      "size": [
        3
      ]
    },
    {
      "name": "Altitude",
      "type": "double",
      "x_cdf_DataType": "CDF_REAL4",
      "description": "Altitude above the spheroid Earth",
      "fill": "-1.0E31",
      "units": "km",
      "x_label": "ALT",
      "x_format": ".3e",
      "x_fractionDigits": "3",
      "x_cdf_FORMAT": "E10.3",
      "x_cdf_FIELDNAM": "Altitude",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "Epoch"
    },
    {
      "name": "GLAT",
      "type": "double",
      "x_cdf_DataType": "CDF_REAL4",
      "description": "Geographic latitude of subsatellite point",
      "fill": "-1.0E31",
      "units": "degrees",
      "x_label": "GLAT",
      "x_format": ".2f",
      "x_fractionDigits": "2",
      "x_cdf_FORMAT": "F6.2",
      "x_cdf_FIELDNAM": "Geographic Latitude",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "Epoch"
    },
    {
      "name": "GLON",
      "type": "double",
      "x_cdf_DataType": "CDF_REAL4",
      "description": "Geographic longitude of the satellite",
      "fill": "-1.0E31",
      "units": "degrees",
      "x_label": "GLON",
      "x_format": ".2f",
      "x_fractionDigits": "2",
      "x_cdf_FORMAT": "F7.2",
      "x_cdf_FIELDNAM": "Geographic Longitude",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "Epoch"
    },
    {
      "name": "MLT",
      "type": "double",
      "x_cdf_DataType": "CDF_REAL4",
      "description": "Magnetic Local Time",
      "fill": "-1.0E31",
      "units": "hours",
      "x_label": "MLT",
      "x_format": ".3f",
      "x_fractionDigits": "3",
      "x_cdf_FORMAT": "F7.3",
      "x_cdf_FIELDNAM": "MLT",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "Epoch"
    },
    {
      "name": "L_Shell",
      "type": "double",
      "x_cdf_DataType": "CDF_REAL4",
      "description": "McIlwain's shell parameter (L)",
      "fill": "-1.0E31",
      "units": "Re",
      "x_label": "L",
      "x_format": ".3f",
      "x_fractionDigits": "3",
      "x_cdf_FORMAT": "F9.3",
      "x_cdf_FIELDNAM": "L Shell",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "Epoch"
    },
    {
      "name": "ILAT",
      "type": "double",
      "x_cdf_DataType": "CDF_REAL4",
      "description": "Current Spacecraft Field Line Footprint's Geomagnetic Latitude",
      "fill": "-1.0E31",
      "units": "degrees",
      "x_label": "Inv Lat",
      "x_format": ".3f",
      "x_fractionDigits": "3",
      "x_cdf_FORMAT": "F7.3",
      "x_cdf_FIELDNAM": "Invariant Latitude",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "Epoch"
    },
    {
      "name": "B_Magnitude",
      "type": "double",
      "x_cdf_DataType": "CDF_REAL4",
      "description": "Magnetic field strength",
      "fill": "-1.0E31",
      "units": "nT",
      "x_label": "B_MAG",
      "x_format": ".3e",
      "x_fractionDigits": "3",
      "x_cdf_FORMAT": "E10.3",
      "x_cdf_FIELDNAM": "B Magnitude",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "Epoch"
    },
    {
      "name": "GEI_B_vec",
      "type": "double",
      "x_cdf_DataType": "CDF_REAL4",
      "description": "GEI magnetic field vector, B(x), B(y), B(z)",
      "fill": "-1.0E31",
      "units": "nT",
      "x_label": [
        "Bx_gei",
        "By_gei",
        "Bz_gei"
      ],
      "x_format": ".3e",
      "x_fractionDigits": "3",
      "x_cdf_FORMAT": "E10.3",
      "x_cdf_FIELDNAM": "B Vector (GEI)",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "Epoch",
      "size": [
        3
      ]
    },
    {
      "name": "Orbit_Number",
      "type": "integer",
      "x_cdf_DataType": "CDF_INT4",
      "description": "Orbit Number ",
      "fill": "-2147483648",
      "units": " ",
      "x_label": "Orbit No.",
      "x_cdf_FORMAT": "I4",
      "x_cdf_FIELDNAM": "Orbit Number",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "Epoch"
    },
    {
      "name": "GEI_position",
      "type": "double",
      "x_cdf_DataType": "CDF_REAL4",
      "description": "Spacecraft Position in GEI coordinates",
      "fill": "-1.0E31",
      "units": "km",
      "x_label": [
        "X_gei",
        "Y_gei",
        "Z_gei"
      ],
      "x_format": ".1f",
      "x_fractionDigits": "1",
      "x_cdf_FORMAT": "F8.1",
      "x_cdf_FIELDNAM": "GEI Position",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "Epoch",
      "size": [
        3
      ]
    },
    {
      "name": "GEI_rel_vel",
      "type": "double",
      "x_cdf_DataType": "CDF_REAL4",
      "description": "GEI satellite velocity relative to a rotating atmosphere.",
      "fill": "-1.0E31",
      "units": "km/sec",
      "x_label": [
        "RelVx_gei",
        "RelVy_gei",
        "RelVz_gei"
      ],
      "x_format": ".3f",
      "x_fractionDigits": "3",
      "x_cdf_FORMAT": "F7.3",
      "x_cdf_FIELDNAM": "GEI Relative Velocity",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "Epoch",
      "size": [
        3
      ]
    },
    {
      "name": "Spin_Angle",
      "type": "double",
      "x_cdf_DataType": "CDF_REAL4",
      "description": "Angle between the Velocity Vector and the Spacecraft x-axis",
      "fill": "-1.0E31",
      "units": "degrees",
      "x_label": "Phase",
      "x_format": ".3f",
      "x_fractionDigits": "3",
      "x_cdf_FORMAT": "F8.3",
      "x_cdf_FIELDNAM": "Spin Phase Angle",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "Epoch"
    },
    {
      "name": "Sunlight",
      "type": "integer",
      "x_cdf_DataType": "CDF_BYTE",
      "description": "Sunlight/Darkness flag, 0 = Darkness, 1 = Sunlight",
      "fill": "-128",
      "units": " ",
      "x_label": "Sunlight stat.",
      "x_cdf_FORMAT": "I1",
      "x_cdf_FIELDNAM": "SunFlag",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "Epoch"
    },
    {
      "name": "Re",
      "type": "double",
      "x_cdf_DataType": "CDF_REAL4",
      "description": "Geocentric radial distance in Earth Radii",
      "fill": "-1.0E31",
      "units": "Re",
      "x_label": "Re",
      "x_format": ".4f",
      "x_fractionDigits": "4",
      "x_cdf_FORMAT": "F7.4",
      "x_cdf_FIELDNAM": "Re",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "Epoch"
    },
    {
      "name": "MLAT",
      "type": "double",
      "x_cdf_DataType": "CDF_REAL4",
      "description": "Magnetic Latitude in degrees",
      "fill": "-1.0E31",
      "units": "degrees",
      "x_label": "Magnetic Latitude",
      "x_format": ".3f",
      "x_fractionDigits": "3",
      "x_cdf_FORMAT": "F7.3",
      "x_cdf_FIELDNAM": "Magnetic Latitude",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "Epoch"
    }
  ],
  "x_info_author": "bw",
  "x_cdaweb_hapi_version": "20260130.0606",
  "x_info_caching": false,
  "status": {
    "code": 1200,
    "message": "OK"
  },
  "HAPI": "3.2",
  "x_LastUpdate": "2026-04-12T15:09:45Z"
}