Fig. 3.
From: Evaluation of candidate geomagnetic field models for IGRF-11
Difference in the Z component of the magnetic field between each DGRF-2005 candidate model and the mean model MABG (i.e. the final DGRF-2005) plotted at Earth’s reference radius in Winkel tripel projection. Contours are at intervals of 5 nT with labels every 10 nT when sufficiently large. Red: positive, Blue: negative. The dip equator is shown.