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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Dataset Last Updated: January 01, 1957 at 12:00 AM

This file is comprised of absolute mean hourly values of the geomagnetic components D, H and Z or X, Y and Z. These values, on magnetic tape, are available from approximately 220 of the 400...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Dataset Last Updated: January 01, 1972 at 12:00 AM

This data file is comprised of instantaneous values of the geomagnetic components D, H, and Z or X, Y, and Z at 2.5-minute intervals. These values were derived from analog recordings...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Dataset Last Updated: January 01, 1979 at 12:00 AM

The file is comprised of instantaneous absolute values of the geomagnetic components D, H, and Z or X, Y, and Z at 1-minute intervals. These values were derived either from analog recordings...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Dataset Last Updated: January 01, 1994 at 12:00 AM

This file is comprised of the variation one minute values of the geomagnetic components X, Y and Z. These data were calculated by the Air Force Geophysics Laboratory magnetometer network during...

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