{
  "HAPI": "3.3.1",
  "status": {
    "code": 1200,
    "message": "OK"
  },
  "startDate": "1956-01-01T00:00:00.000Z",
  "stopDate": "1984-01-01T00:00:00.000Z",
  "cadence": "PT7.5S",
  "timeStampLocation": "center",
  "modificationDate": "2026-08-31T04:56:04Z",
  "maxRequestDuration": "P31D",
  "title": "Kakioka Observatory (Best Available, 7.5-second)",
  "description": "Kakioka (KAK) 7.5-second geomagnetic field, served as the components natively reported in the source. Timestamps are bin centers (timeStampLocation=center). Best available version per period.",
  "licenseURL": "https://wdc.kugi.kyoto-u.ac.jp/wdc/Sec3.html",
  "x_observatory": {
    "name": "Kakioka",
    "iagaCode": "KAK",
    "latitude": 36.232,
    "longitude": 140.186,
    "elevation": 36,
    "country": "Japan"
  },
  "x_sourceMetadata": [
    {
      "startDate": "1956-01-01T00:00:00.000Z",
      "stopDate": "1984-01-01T00:00:00.000Z",
      "sourceOfData": "Japan Meteorological Agency",
      "sensorOrientation": "variation:DHZ, absolute:DIF",
      "digitalSampling": "7.62 second",
      "dataIntervalType": "7.5-second (interpolation)",
      "dataType": "quasi-definitive"
    }
  ],
  "x_sourceComments": [
    {
      "startDate": "1956-01-01T00:00:00.000Z",
      "stopDate": "1962-11-01T00:00:00.000Z",
      "comments": [
        " Element              Geomagnetic field digitized from magnetograms",
        " Units: D(eastward+)[arc minute], H[nT], Z(downward+)[nT], F[nT]",
        " Accuracy: 0.2nT ( 0.02 arc minute)",
        " X=H*cos(D*pi/180/60) [nT],Y=H*sin(D*pi/180/60) [nT],",
        " I=arctan(Z/H)*60*180/pi [arc minute]",
        " When a trace is overlapped with a baseline, 99999 may be embedded.",
        " Issued by Kakioka Magnetic Observatory,Japan Meteorological Agency",
        " URL:http://www.kakioka-jma.go.jp/en/index.html"
      ]
    },
    {
      "startDate": "1962-11-01T00:00:00.000Z",
      "stopDate": "1962-11-02T00:00:00.000Z",
      "comments": [
        " Element              Geomagnetic field digitized from magnetograms",
        " Units: D(eastward+)[arc minute], H[nT], Z(downward+)[nT], F[nT]",
        " Accuracy: 0.2nT ( 0.02 arc minute)",
        " X=H*cos(D*pi/180/60) [nT],Y=H*sin(D*pi/180/60) [nT],",
        " I=arctan(Z/H)*60*180/pi [arc minute]",
        " When a trace is overlapped with a baseline, 99999 may be embedded.",
        " Issued by Kakioka Magnetic Observatory,Japan Meteorological Agency",
        " URL:http://www.kakioka-jma.go.jp/en/index.html",
        " D :  Secondary variometers are used from 00:00:00.0 to 02:09:52.5",
        " H :  Secondary variometers are used from 00:00:00.0 to 02:09:52.5",
        " Z :  Secondary variometers are used from 00:00:00.0 to 02:09:52.5",
        " Last update          2018-04-24"
      ]
    },
    {
      "startDate": "1962-11-02T00:00:00.000Z",
      "stopDate": "1962-11-21T00:00:00.000Z",
      "comments": [
        " Element              Geomagnetic field digitized from magnetograms",
        " Units: D(eastward+)[arc minute], H[nT], Z(downward+)[nT], F[nT]",
        " Accuracy: 0.2nT ( 0.02 arc minute)",
        " X=H*cos(D*pi/180/60) [nT],Y=H*sin(D*pi/180/60) [nT],",
        " I=arctan(Z/H)*60*180/pi [arc minute]",
        " When a trace is overlapped with a baseline, 99999 may be embedded.",
        " Issued by Kakioka Magnetic Observatory,Japan Meteorological Agency",
        " URL:http://www.kakioka-jma.go.jp/en/index.html"
      ]
    },
    {
      "startDate": "1962-11-21T00:00:00.000Z",
      "stopDate": "1962-11-23T00:00:00.000Z",
      "comments": [
        " Element              Geomagnetic field digitized from magnetograms",
        " Units: D(eastward+)[arc minute], H[nT], Z(downward+)[nT], F[nT]",
        " Accuracy: 0.2nT ( 0.02 arc minute)",
        " X=H*cos(D*pi/180/60) [nT],Y=H*sin(D*pi/180/60) [nT],",
        " I=arctan(Z/H)*60*180/pi [arc minute]",
        " When a trace is overlapped with a baseline, 99999 may be embedded.",
        " Issued by Kakioka Magnetic Observatory,Japan Meteorological Agency",
        " URL:http://www.kakioka-jma.go.jp/en/index.html",
        " D :  Secondary variometers are used from 00:00:00.0 to 23:59:52.5",
        " H :  Secondary variometers are used from 00:00:00.0 to 23:59:52.5",
        " Z :  Secondary variometers are used from 00:00:00.0 to 23:59:52.5",
        " Last update          2018-04-24"
      ]
    },
    {
      "startDate": "1962-11-23T00:00:00.000Z",
      "stopDate": "1962-11-24T00:00:00.000Z",
      "comments": [
        " Element              Geomagnetic field digitized from magnetograms",
        " Units: D(eastward+)[arc minute], H[nT], Z(downward+)[nT], F[nT]",
        " Accuracy: 0.2nT ( 0.02 arc minute)",
        " X=H*cos(D*pi/180/60) [nT],Y=H*sin(D*pi/180/60) [nT],",
        " I=arctan(Z/H)*60*180/pi [arc minute]",
        " When a trace is overlapped with a baseline, 99999 may be embedded.",
        " Issued by Kakioka Magnetic Observatory,Japan Meteorological Agency",
        " URL:http://www.kakioka-jma.go.jp/en/index.html",
        "",
        "",
        "",
        " Last update          2016-03-25"
      ]
    },
    {
      "startDate": "1962-11-24T00:00:00.000Z",
      "stopDate": "1962-11-25T00:00:00.000Z",
      "comments": [
        " Element              Geomagnetic field digitized from magnetograms",
        " Units: D(eastward+)[arc minute], H[nT], Z(downward+)[nT], F[nT]",
        " Accuracy: 0.2nT ( 0.02 arc minute)",
        " X=H*cos(D*pi/180/60) [nT],Y=H*sin(D*pi/180/60) [nT],",
        " I=arctan(Z/H)*60*180/pi [arc minute]",
        " When a trace is overlapped with a baseline, 99999 may be embedded.",
        " Issued by Kakioka Magnetic Observatory,Japan Meteorological Agency",
        " URL:http://www.kakioka-jma.go.jp/en/index.html",
        " D :  Secondary variometers are used from 00:00:00.0 to 03:09:52.5",
        " H :  Secondary variometers are used from 00:00:00.0 to 03:09:52.5",
        " Z :  Secondary variometers are used from 00:00:00.0 to 03:09:52.5",
        " Last update          2018-04-24"
      ]
    },
    {
      "startDate": "1962-11-25T00:00:00.000Z",
      "stopDate": "1963-05-09T00:00:00.000Z",
      "comments": [
        " Element              Geomagnetic field digitized from magnetograms",
        " Units: D(eastward+)[arc minute], H[nT], Z(downward+)[nT], F[nT]",
        " Accuracy: 0.2nT ( 0.02 arc minute)",
        " X=H*cos(D*pi/180/60) [nT],Y=H*sin(D*pi/180/60) [nT],",
        " I=arctan(Z/H)*60*180/pi [arc minute]",
        " When a trace is overlapped with a baseline, 99999 may be embedded.",
        " Issued by Kakioka Magnetic Observatory,Japan Meteorological Agency",
        " URL:http://www.kakioka-jma.go.jp/en/index.html"
      ]
    },
    {
      "startDate": "1963-05-09T00:00:00.000Z",
      "stopDate": "1984-01-01T00:00:00.000Z",
      "comments": [
        " Element              Geomagnetic field digitized from magnetograms",
        " Units: D(eastward+)[arc minute], H[nT], Z(downward+)[nT], F[nT]",
        " Accuracy: 0.2nT ( 0.02 arc minute)",
        " X=H*cos(D*pi/180/60) [nT],Y=H*sin(D*pi/180/60) [nT],",
        " I=arctan(Z/H)*60*180/pi [arc minute]",
        " When a trace is overlapped with a baseline, 99999 may be embedded.",
        " Issued by Kakioka Magnetic Observatory,Japan Meteorological Agency",
        " URL:http://www.kakioka-jma.go.jp/en/index.html"
      ]
    }
  ],
  "x_unreportedElements": [
    {
      "startDate": "1956-01-01T00:00:00.000Z",
      "stopDate": "1984-01-01T00:00:00.000Z",
      "elements": "F"
    }
  ],
  "parameters": [
    {
      "name": "Time",
      "type": "isotime",
      "units": "UTC",
      "fill": null,
      "length": 24,
      "label": "Time"
    },
    {
      "name": "geomagneticFieldD",
      "type": "double",
      "units": "arcmin",
      "fill": "99999.0",
      "label": "D",
      "description": "Geomagnetic declination (eastward+), minutes of arc. Native when reported (horizontal reported as D,H); else fill."
    },
    {
      "name": "geomagneticFieldH",
      "type": "double",
      "units": "nT",
      "fill": "99999.0",
      "label": "H",
      "description": "Geomagnetic horizontal intensity. Native when reported; else fill."
    },
    {
      "name": "geomagneticFieldX",
      "type": "double",
      "units": "nT",
      "fill": "99999.0",
      "label": "X",
      "description": "Geomagnetic north component. Native when reported (horizontal reported as X,Y); else fill. Not derived from H,D."
    },
    {
      "name": "geomagneticFieldY",
      "type": "double",
      "units": "nT",
      "fill": "99999.0",
      "label": "Y",
      "description": "Geomagnetic east component. Native when reported; else fill. Not derived from H,D."
    },
    {
      "name": "geomagneticFieldZ",
      "type": "double",
      "units": "nT",
      "fill": "99999.0",
      "label": "Z",
      "description": "Geomagnetic vertical (downward+) component."
    },
    {
      "name": "geomagneticFieldF",
      "type": "double",
      "units": "nT",
      "fill": "99999.0",
      "label": "F",
      "description": "Total field intensity, measured by an instrument independent of the vector components. Element letter F in the IAGA2002/WDC native output. Fill when the source reports no total field. Note that fill covers two distinct cases the source writes differently (99999 = measured but missing, 88888 = not observed at all); see x_unreportedElements for the periods in which an element was not observed."
    },
    {
      "name": "geomagneticFieldI",
      "type": "double",
      "units": "arcmin",
      "fill": "99999.0",
      "label": "I",
      "description": "Geomagnetic inclination, minutes of arc. Reserved column: native only when reported; otherwise fill."
    },
    {
      "name": "versionCode",
      "type": "integer",
      "units": null,
      "fill": null,
      "label": "Version Code",
      "description": "Processing status code Mm following IAGA2002 Data Type (M: 0=variation, 1=provisional, 2=quasi-definitive, 3=definitive; m=minor, the recalculation generation within the same major: 0=first conversion, 1 and above=reconverted after the source changed)."
    }
  ],
  "x_LastUpdate": "2026-09-23T15:14:59Z"
}