2.5.0 spase://IUGONET/NumericalData/KMO-JMA/MMB/MagneticFieldSensor/PT1M Memambetsu geomagnetic field 1-minute digital data in IAGA-2002 format 2013-02-15T00:00:00 The geomagnetic field 1-minute digital data observed at Memambetsu (MMB) in IAGA-2002 format. Data file comprises: Twelve mandatory file header records, Unlimited optional comment records, One mandatory data header record, A series of data records. Every record is 70 characters long plus the machine-dependent carriage return / line feed. Details of the format is described at http://www.ngdc.noaa.gov/IAGA/vdat/iagaformat.html. If the data are used in publications and presentations, the Kakioka Magnetic Observatory of the Japan Meteorological Agency should be acknowledged properly. spase://IUGONET/Person/Chosaka.KMO-JMA GeneralContact spase://IUGONET/Repository/KMO-JMA/DigitalDataService Online Open Digital Data Service provided by Kakioka Magnetic Observatory http://www.kakioka-jma.go.jp/en/index.html This service allows the download of definitive geomagnetic data, which have been corrected for baseline variations and which have had spikes removed and gaps filled where possible. Other difinitive data have the same quality. Text.ASCII spase://IUGONET/Instrument/KMO-JMA/MMB/MagneticFieldSensor MagneticField 1985-01-01T00:00:00 -P1M Earth.Surface Spherical WGS84 43.91 43.91 144.189 144.189 0.042 0.042 Reference: MMB Geomagnetic field Original one-second values are added to provisional baseline values. One-minute values are calculated as averages of 60 one-second values, centered on the minute. Then one-minute values are calibrated using absolute values observed at a one-week (two-week) interval before (after) Dec. 2011. D(eastward+)[arc minute], H[nT], Z(downward+)[nT], F[nT] Vector Magnetic