A Report on Geomagnetic Observatories, 1995

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Report on the status of world wide geomagnetic observatories

AM Index

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Geomagnetic Range index using data from multiple observatories - Mayaud 1948

Geomagnetic Observatory One Minute Data

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Unknown

Geomagnetic Observatory Hourlyl Data

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Geomagnetic Hourly Averages from world wide observatories

Bibliography of Historical Geomagnetic Main Field Surveys

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Bibliography of Historical Geomagnetic Main Field Surveys as reference source

Geomagnetic Observatory 2.5 Minute Data

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Geomagnetic variation data with 2.5 minute resolution

Geomagnetic Indices Bulletin (GIB)

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The Geomagnetic Indices Bulletin is a one page sheet containing the magnetic indices Kp, Ap, Cp, An, As, Am and the provisional aa indices. The bulletin is published monthly.

AA Index

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The geomagnetic aa index provides a long climatology of global geomagnetic activity using 2 antipodal observatories at Greenwich and Melbourne- IAGA Bulletin 37, 1975 p. 128

Geomagnetic Observatory 10 Second Data

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Geomagnetic 10 second data provides high temporal resolution of geomagnetic variations

Intermagnet definitive observatory data

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1 minute and hourly values reported as definitive from Intermagnet observatories.