{
  "startDate": "2007-02-15T00:00:37Z",
  "stopDate": "2010-12-31T23:00:29Z",
  "sampleStartDate": "2009-01-01T00:00:35Z",
  "sampleStopDate": "2009-12-31T23:00:10Z",
  "cadence": "PT1H",
  "x_cadence_fraction": 0.9890610756608933,
  "x_cadence_note": "Counts based on variable 'epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/stereo/ahead/l2/plastic/alpha-1dmax/1hr/2007/sta_l2_pla_alpha_ra_1dmax_1hr_20070101_v02.cdf. The most common cadence, 3600000 [ms] = PT1H, occurred for 98.9061% of the 7595 timesteps.",
  "maxRequestDuration": "PT122338792S",
  "resourceURL": "https://cdaweb.gsfc.nasa.gov/misc/NotesS.html#STA_L2_PLA_ALPHA_RA_1DMAX_1HR",
  "contact": "Dr. Antoinette Galvin @ University of New Hampshire",
  "parameters": [
    {
      "name": "Time",
      "type": "isotime",
      "units": "UTC",
      "length": 24,
      "fill": null,
      "x_description": "Time, beginning of interval, 1 hour resolution",
      "x_cdf_NAME": "epoch",
      "x_cdf_DataType": "CDF_EPOCH"
    },
    {
      "name": "alpha_density",
      "type": "double",
      "x_cdf_DataType": "CDF_FLOAT",
      "description": "Alpha Density",
      "fill": "-1.0E31",
      "units": "1/cc",
      "x_label": "Na",
      "x_format": ".4e",
      "x_fractionDigits": "4",
      "x_cdf_FORMAT": "E11.4",
      "x_cdf_FIELDNAM": "Alpha Density",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "epoch"
    },
    {
      "name": "alpha_bulk_speed",
      "type": "double",
      "x_cdf_DataType": "CDF_FLOAT",
      "description": "Alpha Bulk Speed",
      "fill": "-1.0E31",
      "units": "km/s",
      "x_label": "Va",
      "x_format": ".0e",
      "x_fractionDigits": "0",
      "x_cdf_FORMAT": "E8.0",
      "x_cdf_FIELDNAM": "Alpha Bulk Speed",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "epoch"
    },
    {
      "name": "alpha_thermal_speed",
      "type": "double",
      "x_cdf_DataType": "CDF_FLOAT",
      "description": "Alpha Thermal Speed",
      "fill": "-1.0E31",
      "units": "sqrt(2kT/m)",
      "x_label": "Vtha",
      "x_format": ".1e",
      "x_fractionDigits": "1",
      "x_cdf_FORMAT": "E9.1",
      "x_cdf_FIELDNAM": "Alpha Thermal Speed",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "epoch"
    },
    {
      "name": "Na_Np",
      "type": "double",
      "x_cdf_DataType": "CDF_FLOAT",
      "description": "Na/Np",
      "fill": "-1.0E31",
      "units": "ratio",
      "x_label": "Na/Np",
      "x_format": ".3e",
      "x_fractionDigits": "3",
      "x_cdf_FORMAT": "E10.3",
      "x_cdf_FIELDNAM": "Na/Np",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "epoch"
    },
    {
      "name": "Va_Vp",
      "type": "double",
      "x_cdf_DataType": "CDF_FLOAT",
      "description": "Va-Vp",
      "fill": "-1.0E31",
      "units": "km/s",
      "x_label": "Va-Vp",
      "x_format": ".0e",
      "x_fractionDigits": "0",
      "x_cdf_FORMAT": "E8.0",
      "x_cdf_FIELDNAM": "Va-Vp",
      "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": "2026-04-12T15:14:28Z"
}