{"HAPI":"3.3.1","status":{"code":1200,"message":"OK"},"startDate":"1956-01-01T00:00:00Z","stopDate":"2026-08-01T00:00:00Z","cadence":"PT1M","timeStampLocation":"center","modificationDate":"2026-08-31T00:14:17Z","maxRequestDuration":"P366D","title":"Kakioka Observatory (Best Available, 1-minute)","description":"Kakioka (KAK) 1-minute 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":"1956-01-01T00:00:00Z","stopDate":"1976-01-01T00:00:00Z","sourceOfData":"Japan Meteorological Agency","sensorOrientation":"variation:DHZ, absolute:DIF","digitalSampling":"7.62 second","dataIntervalType":"Average 1-minute (00:30-01:29)","dataType":"quasi-definitive"},{"startDate":"1991-01-01T00:00:00Z","stopDate":"2000-01-01T00:00:00Z","sourceOfData":"INTERMAGNET IRDS","digitalSampling":"0.000","dataIntervalType":"1-minute","dataType":"Definitive"},{"startDate":"2000-01-01T00:00:00Z","stopDate":"2021-01-01T00:00:00Z","sourceOfData":"INTERMAGNET IRDS","sensorOrientation":"HDZF","digitalSampling":"1.000","dataIntervalType":"1-minute","dataType":"Definitive"},{"startDate":"2021-01-01T00:00:00Z","stopDate":"2025-01-01T00:00:00Z","sourceOfData":"INTERMAGNET Website","sensorOrientation":"HDZF","digitalSampling":"1.000","dataIntervalType":"1-minute","dataType":"Definitive"}],"x_sourceComments":[{"startDate":"1956-01-01T00:00:00Z","stopDate":"1961-03-01T00:00:00Z","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."," Reference: Mashiko, N. et al., 2012: Digitization of bromide paper"," records to extract one-minute geomagnetic data. Proceedings of 1st"," ICSU-WDS conference 'Global data for global science', Kyoto,"," 251-254. [Available online at www.icsu-wds.org.]"," Issued by Kakioka Magnetic Observatory,Japan Meteorological Agency"," URL:http://www.kakioka-jma.go.jp/en/index.html"]},{"startDate":"1961-06-01T00:00:00Z","stopDate":"1961-07-01T00:00:00Z","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."," Reference: Mashiko, N. et al., 2012: Digitization of bromide paper"," records to extract one-minute geomagnetic data. Proceedings of 1st"," ICSU-WDS conference 'Global data for global science', Kyoto,"," 251-254. [Available online at www.icsu-wds.org.]"," Issued by Kakioka Magnetic Observatory,Japan Meteorological Agency"," URL:http://www.kakioka-jma.go.jp/en/index.html"," D comp :The data are omitted because baseline values are unstable"," H comp :The data are omitted because baseline values are unstable"," Z comp :The data are omitted because baseline values are unstable"," Last update          2016-03-25"]},{"startDate":"1961-07-01T00:00:00Z","stopDate":"1968-09-01T00:00:00Z","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."," Reference: Mashiko, N. et al., 2012: Digitization of bromide paper"," records to extract one-minute geomagnetic data. Proceedings of 1st"," ICSU-WDS conference 'Global data for global science', Kyoto,"," 251-254. [Available online at www.icsu-wds.org.]"," Issued by Kakioka Magnetic Observatory,Japan Meteorological Agency"," URL:http://www.kakioka-jma.go.jp/en/index.html"]},{"startDate":"1968-09-01T00:00:00Z","stopDate":"1968-10-01T00:00:00Z","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."," Reference: Mashiko, N. et al., 2012: Digitization of bromide paper"," records to extract one-minute geomagnetic data. Proceedings of 1st"," ICSU-WDS conference 'Global data for global science', Kyoto,"," 251-254. [Available online at www.icsu-wds.org.]"," 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 to 23:59:00"," H :      Secondary variometers are used from 00:00:00 to 23:59:00"," Z :      Secondary variometers are used from 00:00:00 to 23:59:00"," Last update          2020-03-24"]},{"startDate":"1968-10-01T00:00:00Z","stopDate":"1968-11-01T00:00:00Z","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."," Reference: Mashiko, N. et al., 2012: Digitization of bromide paper"," records to extract one-minute geomagnetic data. Proceedings of 1st"," ICSU-WDS conference 'Global data for global science', Kyoto,"," 251-254. [Available online at www.icsu-wds.org.]"," Issued by Kakioka Magnetic Observatory,Japan Meteorological Agency"," URL:http://www.kakioka-jma.go.jp/en/index.html","","",""," Last update          2020-03-24"]},{"startDate":"1968-11-01T00:00:00Z","stopDate":"1968-12-01T00:00:00Z","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."," Reference: Mashiko, N. et al., 2012: Digitization of bromide paper"," records to extract one-minute geomagnetic data. Proceedings of 1st"," ICSU-WDS conference 'Global data for global science', Kyoto,"," 251-254. [Available online at www.icsu-wds.org.]"," 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 to 23:59:00"," H :      Secondary variometers are used from 00:00:00 to 23:59:00"," Z :      Secondary variometers are used from 00:00:00 to 23:59:00"," Last update          2020-03-24"]},{"startDate":"1968-12-01T00:00:00Z","stopDate":"1975-01-01T00:00:00Z","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."," Reference: Mashiko, N. et al., 2012: Digitization of bromide paper"," records to extract one-minute geomagnetic data. Proceedings of 1st"," ICSU-WDS conference 'Global data for global science', Kyoto,"," 251-254. [Available online at www.icsu-wds.org.]"," Issued by Kakioka Magnetic Observatory,Japan Meteorological Agency"," URL:http://www.kakioka-jma.go.jp/en/index.html"]},{"startDate":"1975-01-01T00:00:00Z","stopDate":"1976-01-01T00:00:00Z","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."," Reference: Mashiko, N. et al., 2012: Digitization of bromide paper"," records to extract one-minute geomagnetic data. Proceedings of 1st"," ICSU-WDS conference 'Global data for global science', Kyoto,"," 251-254. [Available online at www.icsu-wds.org.]"," 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 to 23:59:00"," H :      Secondary variometers are used from 00:00:00 to 23:59:00"," Z :      Secondary variometers are used from 00:00:00 to 23:59:00"," Last update          2020-03-24"]}],"x_unreportedElements":[{"startDate":"1956-01-01T00:00:00Z","stopDate":"1961-03-01T00:00:00Z","elements":"F"},{"startDate":"1961-06-01T00:00:00Z","stopDate":"1976-01-01T00:00:00Z","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)."}]}