{
  "HAPI": "3.1",
  "status": {
    "code": 1200,
    "message": "OK"
  },
  "startDate": "1981-06-05T00:00:07.000Z",
  "stopDate": "1981-09-28T23:59:08.000Z",
  "parameters": [
    {
      "name": "DATETIME",
      "length": 24,
      "description": "Year, month and day of the sample at the start of the first sweep for the record in the format YYMMDD.",
      "units": "UTC",
      "type": "isotime",
      "fill": null
    },
    {
      "name": "SECOND",
      "description": "Seconds of day, to the nearest second, at the start of the sweep. The first value in low band (1326.0 kHz) occurs some 3.9 seconds after this time with samples at successively lower frequencies spaced 0.03 seconds apart. Only one time is given for the entire major frame, thus the start of each sweep is the time given plus 6 seconds times the sweep number minus 1 (i.e. 0 through 7).",
      "units": null,
      "type": "integer",
      "fill": null
    },
    {
      "size": [
        71
      ],
      "name": "SWEEP1",
      "description": "71 4-byte integer data values. The first is a status word, the other 70 are low band channels 1326.0 to 1.2 kHz. For the status word the 12 least significant bits have used, although not all 12 have meaning for PRA low band. Numbering those bits 0 for least significant to 11 for most significant, the bits that have meaning are as follows: bit 0: 15 dB attenuator in use when equal to 1 1: 30 dB attenuator in use when equal to 1 2: 45 dB attenuator in use when equal to 1 9,10 (together): polarization of first channel sampled (1326.0 kHz) according to the scheme: 9\10 0 1 0 R L 1 L R If the status word is zero, any data in that receiver sweep should be discarded.",
      "units": "MILLIBELL",
      "type": "integer",
      "fill": "0"
    },
    {
      "size": [
        71
      ],
      "name": "SWEEP2",
      "description": "71 4-byte integer data values. The first is a status word, the other 70 are low band channels 1326.0 to 1.2 kHz. For the status word the 12 least significant bits have used, although not all 12 have meaning for PRA low band. Numbering those bits 0 for least significant to 11 for most significant, the bits that have meaning are as follows: bit 0: 15 dB attenuator in use when equal to 1 1: 30 dB attenuator in use when equal to 1 2: 45 dB attenuator in use when equal to 1 9,10 (together): polarization of first channel sampled (1326.0 kHz) according to the scheme: 9\10 0 1 0 R L 1 L R If the status word is zero, any data in that receiver sweep should be discarded.",
      "units": "MILLIBELL",
      "type": "integer",
      "fill": "0"
    },
    {
      "size": [
        71
      ],
      "name": "SWEEP3",
      "description": "71 4-byte integer data values. The first is a status word, the other 70 are low band channels 1326.0 to 1.2 kHz. For the status word the 12 least significant bits have used, although not all 12 have meaning for PRA low band. Numbering those bits 0 for least significant to 11 for most significant, the bits that have meaning are as follows: bit 0: 15 dB attenuator in use when equal to 1 1: 30 dB attenuator in use when equal to 1 2: 45 dB attenuator in use when equal to 1 9,10 (together): polarization of first channel sampled (1326.0 kHz) according to the scheme: 9\10 0 1 0 R L 1 L R If the status word is zero, any data in that receiver sweep should be discarded.",
      "units": "MILLIBELL",
      "type": "integer",
      "fill": "0"
    },
    {
      "size": [
        71
      ],
      "name": "SWEEP4",
      "description": "71 4-byte integer data values. The first is a status word, the other 70 are low band channels 1326.0 to 1.2 kHz. For the status word the 12 least significant bits have used, although not all 12 have meaning for PRA low band. Numbering those bits 0 for least significant to 11 for most significant, the bits that have meaning are as follows: bit 0: 15 dB attenuator in use when equal to 1 1: 30 dB attenuator in use when equal to 1 2: 45 dB attenuator in use when equal to 1 9,10 (together): polarization of first channel sampled (1326.0 kHz) according to the scheme: 9\10 0 1 0 R L 1 L R If the status word is zero, any data in that receiver sweep should be discarded.",
      "units": "MILLIBELL",
      "type": "integer",
      "fill": "0"
    },
    {
      "size": [
        71
      ],
      "name": "SWEEP5",
      "description": "71 4-byte integer data values. The first is a status word, the other 70 are low band channels 1326.0 to 1.2 kHz. For the status word the 12 least significant bits have used, although not all 12 have meaning for PRA low band. Numbering those bits 0 for least significant to 11 for most significant, the bits that have meaning are as follows: bit 0: 15 dB attenuator in use when equal to 1 1: 30 dB attenuator in use when equal to 1 2: 45 dB attenuator in use when equal to 1 9,10 (together): polarization of first channel sampled (1326.0 kHz) according to the scheme: 9\10 0 1 0 R L 1 L R If the status word is zero, any data in that receiver sweep should be discarded.",
      "units": "MILLIBELL",
      "type": "integer",
      "fill": "0"
    },
    {
      "size": [
        71
      ],
      "name": "SWEEP6",
      "description": "71 4-byte integer data values. The first is a status word, the other 70 are low band channels 1326.0 to 1.2 kHz. For the status word the 12 least significant bits have used, although not all 12 have meaning for PRA low band. Numbering those bits 0 for least significant to 11 for most significant, the bits that have meaning are as follows: bit 0: 15 dB attenuator in use when equal to 1 1: 30 dB attenuator in use when equal to 1 2: 45 dB attenuator in use when equal to 1 9,10 (together): polarization of first channel sampled (1326.0 kHz) according to the scheme: 9\10 0 1 0 R L 1 L R If the status word is zero, any data in that receiver sweep should be discarded.",
      "units": "MILLIBELL",
      "type": "integer",
      "fill": "0"
    },
    {
      "size": [
        71
      ],
      "name": "SWEEP7",
      "description": "71 4-byte integer data values. The first is a status word, the other 70 are low band channels 1326.0 to 1.2 kHz. For the status word the 12 least significant bits have used, although not all 12 have meaning for PRA low band. Numbering those bits 0 for least significant to 11 for most significant, the bits that have meaning are as follows: bit 0: 15 dB attenuator in use when equal to 1 1: 30 dB attenuator in use when equal to 1 2: 45 dB attenuator in use when equal to 1 9,10 (together): polarization of first channel sampled (1326.0 kHz) according to the scheme: 9\10 0 1 0 R L 1 L R If the status word is zero, any data in that receiver sweep should be discarded.",
      "units": "MILLIBELL",
      "type": "integer",
      "fill": "0"
    },
    {
      "size": [
        71
      ],
      "name": "SWEEP8",
      "description": "71 4-byte integer data values. The first is a status word, the other 70 are low band channels 1326.0 to 1.2 kHz. For the status word the 12 least significant bits have used, although not all 12 have meaning for PRA low band. Numbering those bits 0 for least significant to 11 for most significant, the bits that have meaning are as follows: bit 0: 15 dB attenuator in use when equal to 1 1: 30 dB attenuator in use when equal to 1 2: 45 dB attenuator in use when equal to 1 9,10 (together): polarization of first channel sampled (1326.0 kHz) according to the scheme: 9\10 0 1 0 R L 1 L R If the status word is zero, any data in that receiver sweep should be discarded.",
      "units": "MILLIBELL",
      "type": "integer",
      "fill": "0"
    }
  ],
  "x_LastUpdate": "2026-04-14T15:10:44Z"
}