Figure 1.

Geomagnetic coordinates in comparison to geographic coordinates. Note: curve lines indicate geomagnetic latitudes and longitudes. Straight lines illustrate geographic latitudes and longitudes. Reproduced by the kind permission of National Geophysical Data Center [13].

Sajedi and Abdollahi BMC Neurology 2012 12:100   doi:10.1186/1471-2377-12-100
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