{
  "startDate": "2014-03-19T14:19:43Z",
  "stopDate": "2025-11-15T00:00:55Z",
  "sampleStartDate": "2025-11-13T00:01Z",
  "sampleStopDate": "2025-11-14T00:00:59Z",
  "cadence": "PT4S",
  "x_cadence_fraction": 0.9376075237986008,
  "x_cadence_note": "Counts based on variable 'epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/maven/swia/l2/onboardsvymom/2014/03/mvn_swi_l2_onboardsvymom_20140319_v02_r00.cdf. The most common cadence, 4000000000 [ns] = PT4S, occurred for 93.7608% of the 8175 timesteps. ",
  "maxRequestDuration": "PT4319950S",
  "resourceURL": "https://cdaweb.gsfc.nasa.gov/misc/NotesM.html#MVN_SWI_L2_ONBOARDSVYMOM",
  "contact": "J.S. Halekas @ U Iowa",
  "resourceID": "https://doi.org/10.17189/1414246",
  "additionalMetadata": {
    "name": "SPASE",
    "contentURL": "https://spase-metadata.org/NASA/NumericalData/MAVEN/SWIA/Level2/OnboardMoments/Survey/PT4S.html"
  },
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      "type": "isotime",
      "units": "UTC",
      "length": 30,
      "fill": null,
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      "x_cdf_NAME": "epoch",
      "x_cdf_DataType": "CDF_TIME_TT2000"
    },
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      "type": "double",
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      "fill": "-1.0E31",
      "units": "cm^-3",
      "x_label": "Density",
      "x_format": ".7f",
      "x_fractionDigits": "7",
      "x_cdf_FORMAT": "F15.7",
      "x_cdf_FIELDNAM": "density",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "epoch"
    },
    {
      "name": "pressure",
      "type": "double",
      "x_cdf_DataType": "CDF_FLOAT",
      "description": "Onboard pressure moment (Inst. Coords), assuming 100% protons",
      "fill": "-1.0E31",
      "units": "eV/cm^-3",
      "x_label": "Pressure (IC)",
      "x_labelComponents": [
        [
          "Pxx (IC)",
          "Pyy (IC)",
          "Pzz (IC)",
          "Pxy (IC)",
          "Pxz (IC)",
          "Pyz (IC)"
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      ],
      "x_format": ".7f",
      "x_fractionDigits": "7",
      "x_cdf_FORMAT": "F16.7",
      "x_cdf_FIELDNAM": "pressure (IC)",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "epoch",
      "size": [
        6
      ],
      "bins": [
        {
          "name": "pindex",
          "description": "pressure Index for CDF compatibility",
          "centers": [
            0,
            1,
            2,
            3,
            4,
            5
          ],
          "x_label": "pindex",
          "units": null
        }
      ]
    },
    {
      "name": "velocity",
      "type": "double",
      "x_cdf_DataType": "CDF_FLOAT",
      "description": "Onboard velocity moment (Inst. Coords), assuming 100% protons",
      "fill": "-1.0E31",
      "units": "km/s",
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      "x_labelComponents": [
        [
          "Vx (IC)",
          "Vy (IC)",
          "Vz (IC)"
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      "x_cdf_FORMAT": "F18.7",
      "x_cdf_FIELDNAM": "velocity (IC)",
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      "x_cdf_DEPEND_0": "epoch",
      "size": [
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      ],
      "bins": [
        {
          "name": "vindex",
          "description": "velocity Index for CDF compatibility",
          "centers": [
            0,
            1,
            2
          ],
          "x_label": "vindex",
          "units": null
        }
      ]
    },
    {
      "name": "velocity_mso",
      "type": "double",
      "x_cdf_DataType": "CDF_FLOAT",
      "description": "Onboard velocity moment (MSO [Mars-Sun Orbit] Coords), assuming 100% protons",
      "fill": "-1.0E31",
      "units": "km/s",
      "x_label": "Velocity Moment (MSO)",
      "x_labelComponents": [
        [
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          "Vy (MSO)",
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        ]
      ],
      "x_format": ".7f",
      "x_fractionDigits": "7",
      "x_cdf_FORMAT": "F18.7",
      "x_cdf_FIELDNAM": "velocity_mso",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "epoch",
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      ],
      "bins": [
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          "name": "vindex",
          "description": "velocity Index for CDF compatibility",
          "centers": [
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            1,
            2
          ],
          "x_label": "vindex",
          "units": null
        }
      ]
    },
    {
      "name": "temperature",
      "type": "double",
      "x_cdf_DataType": "CDF_FLOAT",
      "description": "Onboard temperature moment (Inst. Coords), assuming 100% protons",
      "fill": "-1.0E31",
      "units": "eV",
      "x_label": "Temperature",
      "x_labelComponents": [
        [
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          "Ty (IC)",
          "Tz (IC)"
        ]
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      "x_cdf_FORMAT": "F15.7",
      "x_cdf_FIELDNAM": "temperature",
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      ],
      "bins": [
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          "name": "tindex",
          "description": "temperature Index for CDF compatibility",
          "centers": [
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            1,
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          ],
          "x_label": "tindex",
          "units": null
        }
      ]
    },
    {
      "name": "temperature_mso",
      "type": "double",
      "x_cdf_DataType": "CDF_FLOAT",
      "description": "Onboard temperature moment (MSO [Mars-Sun Orbit] Coords), assuming 100% protons",
      "fill": "-1.0E31",
      "units": "eV",
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      "x_labelComponents": [
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      ],
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          ],
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        }
      ]
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      "name": "atten_state",
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      "x_cdf_DataType": "CDF_UINT1",
      "description": "Attenuator state, 1 = open, 2 = closed, 3 = cover closed",
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      "x_label": "Attenuator State",
      "x_cdf_FORMAT": "I7",
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      "name": "telem_mode",
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      "x_label": "Telemetry Mode",
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      "name": "quality_flag",
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      "name": "decom_flag",
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      "x_cdf_DataType": "CDF_FLOAT",
      "description": "Decommutation Flag: 0 = uncertain mode/attenuator flags, 1 = known mode/attenuator flags",
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      "x_label": "Decommutation Flag",
      "x_format": ".7f",
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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": "2026-04-12T15:11:49Z"
}