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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 | Metadata Last Checked: January 23, 2026 | Last Modified: 1978-01-01T00:00:00.000+00:00
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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