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Geomagnetic Variation Data - 1-Minute Remote Geophysical Observatory Network (RGON)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: April 12, 2026 at 04:57 AM | Dataset Last Updated: January 01, 1978 at 12:00 AM
This data file was generated as part of the International Magnetospheric Study (IMS). The file consists of values of the geomagnetic components D, H, X, Y, Z, and R averaged from 10-second instantaneous measurements. The 1-minute average values are computed at the Space Environment Center (SEC) in Boulder, Colorado, on the SELDADS computer system. The 10-second values are collected digitally in real time at the ground observatories and relayed to SEC via the SMS_GOES satellite and Wallops Island, Virginia, ground station. Twenty-six geomagnetic observatories provide data.

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