{
  "HAPI": "2.0",
  "status": {
    "code": 1200,
    "message": "OK"
  },
  "title": "Mars Odyssey/GRS HEND S4 Neutron Counts",
  "description": "Mars Odyssey Gamma Ray Spectrometer suite: High Energy Neutron Detector (HEND) S4 3He proportional counter. Thermal and epithermal neutron counts per ~20s integration.",
  "cadence": "PT1M",
  "startDate": "2026-08-27T12:00:17Z",
  "stopDate": "2026-11-04T17:20:20Z",
  "parameters": [
    {
      "fill": "null",
      "length": 22,
      "name": "Time",
      "type": "isotime",
      "units": "UTC"
    },
    {
      "fill": "-999",
      "name": "Counts",
      "type": "double",
      "units": "counts",
      "description": "HEND S4 3He proportional counter: thermal/epithermal neutron counts per ~20s integration"
    }
  ],
  "x_LastUpdate": "2026-11-13T16:05:56Z"
}