Fig. 2From: Morphology of the southern African geomagnetic field derived from observatory and repeat station survey observations: 2005–2014Contour plots of the geomagnetic field 2014.5 over southern Africa as determined by the SAREG polynomial model. For declination, a the contour interval is 1°, while all values indicate West of geographic North. For horizontal intensity, b the contour interval is 500 nT, and for vertical intensity, c contour interval is 200 nTBack to article page