{
  "HAPI": "3.2",
  "x_description": "This dataset contains median values of magnetic field measurements. The data have been calculated from spin resolution measurements of the magnetic field vector from the FGM experiment on the Cluster C4 spacecraft. In addition the estimate of magnetic field variance is provided.",
  "cadence": "PT60.000000S",
  "parameters": [
    {
      "type": "isotime",
      "units": "UTC",
      "name": "time_tags",
      "description": "Interval centred time tag",
      "label": "Universal Time",
      "length": 24,
      "fill": null
    },
    {
      "type": "double",
      "name": "B_vec_xyz_gse",
      "description": "Cx_CP_FGM_SPIN: B_vec_xyz_gse",
      "label": "Magnetic Field Vector (GSE)",
      "units": "nT",
      "fill": "-1e30",
      "size": [
        3
      ]
    },
    {
      "type": "double",
      "name": "variance_B_vec_xyz_gse",
      "description": "Cx_CP_FGM_SPIN: B_vec_xyz_gse",
      "label": "Variance of Magnetic Field Vector (GSE)",
      "units": null,
      "fill": "-1e30",
      "size": [
        3
      ]
    },
    {
      "type": "double",
      "name": "B_mag",
      "description": "Cx_CP_FGM_SPIN: B_mag",
      "label": "Magnetic Field Magnitude (1-min median)",
      "units": "nT",
      "fill": "-1e30"
    },
    {
      "type": "double",
      "name": "variance_B_mag",
      "description": "Cx_CP_FGM_SPIN: B_mag",
      "label": "Variance of Magnetic Field Magnitude",
      "units": null,
      "fill": "-1e30"
    },
    {
      "type": "integer",
      "name": "num_pts",
      "description": "Number of points used to calculate 1-min median values",
      "label": "Nr of points per 1-min",
      "units": null,
      "fill": "-9"
    }
  ],
  "startDate": "2001-01-07T00:00Z",
  "stopDate": "2024-09-30T00:00Z",
  "x_tap_url": "https://csa.esac.esa.int/csa-sl-tap/data?retrieval_type=HEADER&DATASET_ID=C4_CP_FGM_DM&FORCEPACK=false",
  "x_tap_data_url": "https://csa.esac.esa.int/csa-sl-tap/data?RETRIEVAL_TYPE=product&RETRIEVAL_ACCESS=streamed&DATASET_ID=C4_CP_FGM_DM&START_DATE=2024-09-30T00:00Z&END_DATE=2024-09-30T00:00Z",
  "status": {
    "code": 1200,
    "message": "OK"
  },
  "x_LastUpdate": "2026-04-12T15:14:18Z"
}