{
  "startDate": "1996-08-30T22:08:01Z",
  "stopDate": "2009-04-30T08:19:39Z",
  "sampleStartDate": "2009-04-30T05:32:26Z",
  "sampleStopDate": "2009-04-30T06:11:25Z",
  "cadence": "PT0.836S",
  "x_cadence_fraction": 0.9429280397022333,
  "x_cadence_note": "Counts based on variable 'epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/fast/esa/l2/ies/1996/08/fa_esa_l2_ies_19960830220801_00103_v02.cdf. The most common cadence, 836 [ms] = PT0.836S, occurred for 94.2928% of the 380 timesteps. ",
  "maxRequestDuration": "PT116950S",
  "resourceURL": "https://cdaweb.gsfc.nasa.gov/misc/NotesF.html#FA_ESA_L2_IES",
  "contact": "J. P. McFadden @ U.C. Berkeley Space Sciences Laboratory",
  "resourceID": "https://doi.org/10.48322/9t9w-1q28",
  "additionalMetadata": {
    "name": "SPASE",
    "contentURL": "https://spase-metadata.org/NASA/NumericalData/FAST/ESA/L2/Ion/Survey/PT0.625S.html"
  },
  "parameters": [
    {
      "name": "Time",
      "type": "isotime",
      "units": "UTC",
      "length": 24,
      "fill": null,
      "x_description": "CDF EPOCH time, one element per ion distribution (NUM_DISTS elements)",
      "x_cdf_NAME": "epoch",
      "x_cdf_DataType": "CDF_EPOCH"
    },
    {
      "name": "theta_shift",
      "type": "double",
      "x_cdf_DataType": "CDF_FLOAT",
      "description": "---> Angular shift (NUM_DISTS elements)",
      "fill": "-1.0E31",
      "units": "degrees",
      "x_label": "Angular shift",
      "x_format": ".6e",
      "x_fractionDigits": "6",
      "x_cdf_FORMAT": "E13.6",
      "x_cdf_FIELDNAM": "Angular shift, converts theta bin values to pitch angles",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "epoch"
    },
    {
      "name": "theta_max",
      "type": "double",
      "x_cdf_DataType": "CDF_FLOAT",
      "description": "---> Angular maximum (NUM_DISTS elements)",
      "fill": "-1.0E31",
      "units": "degrees",
      "x_label": "Angular max",
      "x_format": ".6e",
      "x_fractionDigits": "6",
      "x_cdf_FORMAT": "E13.6",
      "x_cdf_FIELDNAM": "Angular max",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "epoch"
    },
    {
      "name": "theta_min",
      "type": "double",
      "x_cdf_DataType": "CDF_FLOAT",
      "description": "---> Angular minimum (NUM_DISTS elements)",
      "fill": "-1.0E31",
      "units": "degrees",
      "x_label": "Angular min",
      "x_format": ".6e",
      "x_fractionDigits": "6",
      "x_cdf_FORMAT": "E13.6",
      "x_cdf_FIELDNAM": "Angular min",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "epoch"
    },
    {
      "name": "bkg",
      "type": "double",
      "x_cdf_DataType": "CDF_FLOAT",
      "description": "Background counts array with dimensions (NUM_DISTS)",
      "fill": "-1.0E31",
      "units": "None",
      "x_label": "Background counts",
      "x_format": ".6e",
      "x_fractionDigits": "6",
      "x_cdf_FORMAT": "E13.6",
      "x_cdf_FIELDNAM": "Background counts",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "epoch"
    },
    {
      "name": "sc_pot",
      "type": "double",
      "x_cdf_DataType": "CDF_FLOAT",
      "description": "Spacecraft potential (NUM_DISTS elements)",
      "fill": "-1.0E31",
      "units": "volts",
      "x_label": "Spacecraft potential",
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      "x_fractionDigits": "6",
      "x_cdf_FORMAT": "E13.6",
      "x_cdf_FIELDNAM": "Spacecraft potential",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "epoch"
    },
    {
      "name": "data",
      "type": "integer",
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      "description": "Survey Ion Raw Counts data with dimensions (96, 64, NUM_DISTS)",
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      "units": "Counts",
      "x_label": "Survey Ion Raw Counts",
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      "x_cdf_FIELDNAM": "Survey Ion Raw Counts",
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    {
      "name": "eflux",
      "type": "double",
      "x_cdf_DataType": "CDF_FLOAT",
      "description": "Differential survey-mode ion energy flux array with dimensions (96, 64, NUM_DISTS) (as plasmagrams)",
      "fill": "-1.0E31",
      "units": "eV/sr/sec",
      "x_label": "Survey Ion Energy flux",
      "x_format": ".2e",
      "x_fractionDigits": "2",
      "x_cdf_FORMAT": "E12.2",
      "x_cdf_FIELDNAM": "Survey Ion Energy Flux",
      "x_cdf_DISPLAY_TYPE": "default_dimensionTHUMBSIZE>166>xsz=4,ysz=7>xx=pitch_angle_median,y=energy_median, z=eflux",
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        96
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      "name": "pitch_angle_median",
      "type": "double",
      "x_cdf_DataType": "CDF_FLOAT",
      "description": "median pitch angle",
      "fill": "-1.0E31",
      "units": "degrees",
      "x_label": "Median Pitch Angle",
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          "angle@PA #1",
          "angle@PA #2",
          "angle@PA #3",
          "angle@PA #4",
          "angle@PA #5",
          "angle@PA #6",
          "angle@PA #7",
          "angle@PA #8",
          "angle@PA #9",
          "angle@PA #10",
          "angle@PA #11",
          "angle@PA #12",
          "angle@PA #13",
          "angle@PA #14",
          "angle@PA #15",
          "angle@PA #16",
          "angle@PA #17",
          "angle@PA #18",
          "angle@PA #19",
          "angle@PA #20",
          "angle@PA #21",
          "angle@PA #22",
          "angle@PA #23",
          "angle@PA #24",
          "angle@PA #25",
          "angle@PA #26",
          "angle@PA #27",
          "angle@PA #28",
          "angle@PA #29",
          "angle@PA #30",
          "angle@PA #31",
          "angle@PA #32",
          "angle@PA #33",
          "angle@PA #34",
          "angle@PA #35",
          "angle@PA #36",
          "angle@PA #37",
          "angle@PA #38",
          "angle@PA #39",
          "angle@PA #40",
          "angle@PA #41",
          "angle@PA #42",
          "angle@PA #43",
          "angle@PA #44",
          "angle@PA #45",
          "angle@PA #46",
          "angle@PA #47",
          "angle@PA #48",
          "angle@PA #49",
          "angle@PA #50",
          "angle@PA #51",
          "angle@PA #52",
          "angle@PA #53",
          "angle@PA #54",
          "angle@PA #55",
          "angle@PA #56",
          "angle@PA #57",
          "angle@PA #58",
          "angle@PA #59",
          "angle@PA #60",
          "angle@PA #61",
          "angle@PA #62",
          "angle@PA #63"
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      "x_format": ".6e",
      "x_fractionDigits": "6",
      "x_cdf_FORMAT": "E13.6",
      "x_cdf_FIELDNAM": "Median Pitch Angle",
      "x_cdf_VIRTUAL": "true",
      "x_cdf_FUNCT": "arr_slice",
      "x_cdf_COMPONENTS": [
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      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "epoch",
      "size": [
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          "name": "compno_64",
          "description": "PA Bin No",
          "centers": [
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            33,
            34,
            35,
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            58,
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            60,
            61,
            62,
            63,
            64
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          "x_label": "PA Bin No",
          "units": null
        }
      ]
    },
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      "name": "energy_median",
      "type": "double",
      "x_cdf_DataType": "CDF_FLOAT",
      "description": "---> median energy",
      "fill": "-1.0E31",
      "units": "eV",
      "x_label": "Median Energy",
      "x_labelComponents": [
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          "energy@Energy #0",
          "energy@Energy #1",
          "energy@Energy #2",
          "energy@Energy #3",
          "energy@Energy #4",
          "energy@Energy #5",
          "energy@Energy #6",
          "energy@Energy #7",
          "energy@Energy #8",
          "energy@Energy #9",
          "energy@Energy #10",
          "energy@Energy #11",
          "energy@Energy #12",
          "energy@Energy #13",
          "energy@Energy #14",
          "energy@Energy #15",
          "energy@Energy #16",
          "energy@Energy #17",
          "energy@Energy #18",
          "energy@Energy #19",
          "energy@Energy #20",
          "energy@Energy #21",
          "energy@Energy #22",
          "energy@Energy #23",
          "energy@Energy #24",
          "energy@Energy #25",
          "energy@Energy #26",
          "energy@Energy #27",
          "energy@Energy #28",
          "energy@Energy #29",
          "energy@Energy #30",
          "energy@Energy #31",
          "energy@Energy #32",
          "energy@Energy #33",
          "energy@Energy #34",
          "energy@Energy #35",
          "energy@Energy #36",
          "energy@Energy #37",
          "energy@Energy #38",
          "energy@Energy #39",
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          "energy@Energy #41",
          "energy@Energy #42",
          "energy@Energy #43",
          "energy@Energy #44",
          "energy@Energy #45",
          "energy@Energy #46",
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          "energy@Energy #70",
          "energy@Energy #71",
          "energy@Energy #72",
          "energy@Energy #73",
          "energy@Energy #74",
          "energy@Energy #75",
          "energy@Energy #76",
          "energy@Energy #77",
          "energy@Energy #78",
          "energy@Energy #79",
          "energy@Energy #80",
          "energy@Energy #81",
          "energy@Energy #82",
          "energy@Energy #83",
          "energy@Energy #84",
          "energy@Energy #85",
          "energy@Energy #86",
          "energy@Energy #87",
          "energy@Energy #88",
          "energy@Energy #89",
          "energy@Energy #90",
          "energy@Energy #91",
          "energy@Energy #92",
          "energy@Energy #93",
          "energy@Energy #94",
          "energy@Energy #95"
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      ],
      "x_format": ".6e",
      "x_fractionDigits": "6",
      "x_cdf_FORMAT": "E13.6",
      "x_cdf_FIELDNAM": "Median Energy",
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            7,
            8,
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            11,
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            62,
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            64,
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            85,
            86,
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            88,
            89,
            90,
            91,
            92,
            93,
            94,
            95,
            96
          ],
          "x_label": "Energy Bin No",
          "units": null
        }
      ]
    },
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      "name": "pitch_angle",
      "type": "double",
      "x_cdf_DataType": "CDF_FLOAT",
      "description": "---> Pitch Angle values for each distribution (96, 64, NUM_DISTS)",
      "fill": "-1.0E31",
      "units": "degrees",
      "x_label": "Pitch Angle",
      "x_format": ".6e",
      "x_fractionDigits": "6",
      "x_cdf_FORMAT": "E13.6",
      "x_cdf_FIELDNAM": "Pitch Angle",
      "x_cdf_DISPLAY_TYPE": "default_dimensionTHUMBSIZE>166>xsz=4,ysz=7>xx=pitch_angle_median,y=energy_median, z=pitch_angle",
      "x_cdf_DEPEND_0": "epoch",
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        96
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  "x_info_author": "bw",
  "x_cdaweb_hapi_version": "20260130.0606",
  "x_info_caching": false,
  "status": {
    "code": 1200,
    "message": "OK"
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  "HAPI": "3.2",
  "x_LastUpdate": "2026-04-12T15:10:03Z"
}