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Federal
One-second USGS Fredericksburg (FRD) magnetic observatory data collected before 2013
Department of the Interior —
The USGS Geomagnetism Program operates a network of magnetic observatories that collect vector and scalar magnetometer data for use in Earth main-field modeling,... -
Federal
One-second USGS magnetic observatory data collected before 2013
Department of the Interior —
The USGS Geomagnetism Program operates a network of magnetic observatories that collect vector and scalar magnetometer data for use in Earth main-field modeling,...