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AM Index

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: April 12, 2026 at 04:40 AM | Dataset Last Updated: January 01, 1948 at 12:00 AM
Geomagnetic Range index using data from multiple observatories - Mayaud 1948

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  • Global Change Master Directory (GCMD) Keywords

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