Geomagnetic Latitude
This maps shows lines of constant geomagnetic latitude based on apex geomagnetic coordinates referenced to an altitude of 350km. The geomagnetic equator is indicated by a dashed line. The coordinates were calculated using the IGRF-1985 geomagnetic field model updated to epoch 1990.0.
The coordinate system used here is a modified version of apex coordinates
as defined in the following reference:
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