GPS Geodetic Reference System WGS 84
GPS Geodetic Reference System WGS 84
GPS Geodetic Reference System WGS 84
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World Magnetic Model<br />
US/UK World Magnetic Model -- Epoch 2005.0<br />
Main Field Declination (D)<br />
Approved for Public Release 09-478<br />
Next epoch - 2010.0<br />
Main Field Model (12) and a Crustal Model (720)<br />
14