{
  "HAPI": "3.3",
  "status": {
    "code": 1200,
    "message": "OK"
  },
  "startDate": "1999-01-13T00:00:00Z",
  "stopDate": "2020-03-31T23:59:31Z",
  "parameters": [
    {
      "name": "Time",
      "type": "isotime",
      "units": "UTC",
      "length": 24,
      "fill": null
    },
    {
      "name": "azm",
      "type": "double",
      "units": "deg",
      "fill": null,
      "description": "Mean azimuth angle (0=geog N;90=east)"
    },
    {
      "name": "dlos_tec",
      "type": "double",
      "units": "los_tec",
      "fill": null,
      "description": "Error in Line-of-sight integrated electron density"
    },
    {
      "name": "drec_bias",
      "type": "double",
      "units": "TECU",
      "fill": null,
      "description": "Error in GNSS total receiver and satellite bias"
    },
    {
      "name": "elm",
      "type": "double",
      "units": "deg",
      "fill": null,
      "description": "Elevation angle (0=horizontal;90=vert)"
    },
    {
      "name": "galtr",
      "type": "double",
      "units": "km",
      "fill": null,
      "description": "Reference geodetic altitude"
    },
    {
      "name": "gdlat",
      "type": "double",
      "units": "deg",
      "fill": null,
      "description": "Geodetic latitude of measurement"
    },
    {
      "name": "gdlatr",
      "type": "double",
      "units": "deg",
      "fill": null,
      "description": "Reference geod latitude (N hemi=pos)"
    },
    {
      "name": "gdlonr",
      "type": "double",
      "units": "deg",
      "fill": null,
      "description": "Reference geographic longitude"
    },
    {
      "name": "glon",
      "type": "double",
      "units": "deg",
      "fill": null,
      "description": "Geographic longitude of measurement"
    },
    {
      "name": "gnss_type",
      "type": "string",
      "length": 8,
      "units": "N/A",
      "fill": null,
      "description": "GNSS sat type (8 char padded str GPS or GLONASS)"
    },
    {
      "name": "gps_site",
      "type": "string",
      "length": 4,
      "units": "N/A",
      "fill": null,
      "description": "Four letter GNSS receiver code"
    },
    {
      "name": "los_tec",
      "type": "double",
      "units": "los_tec",
      "fill": null,
      "description": "Line-of-sight integrated electron density"
    },
    {
      "name": "pierce_alt",
      "type": "double",
      "units": "km",
      "fill": null,
      "description": "Pierce Point Altitude"
    },
    {
      "name": "rec_bias",
      "type": "double",
      "units": "TECU",
      "fill": null,
      "description": "GNSS total receiver and satellite bias"
    },
    {
      "name": "sat_id",
      "type": "integer",
      "units": "N/A",
      "fill": null,
      "description": "Satellite id"
    },
    {
      "name": "tec",
      "type": "double",
      "units": "TECU",
      "fill": null,
      "description": "Vertically integrated electron density"
    }
  ],
  "geoLocation": [
    0.0,
    0.0,
    0.0
  ],
  "contact": "Anthea Coster",
  "contactID": "acoster@haystack.mit.edu",
  "x_LastUpdate": "2026-11-13T16:05:45Z"
}