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Table 6 The RMS values of the differences between the SACFM-2 and CHAOS-6 main field models and measured satellite data at four reference group points (G1, G2, G3 and G4) for selected epochs in Table 5

From: A harmonic spline magnetic main field model for Southern Africa combining ground and satellite data to describe the evolution of the South Atlantic Anomaly in this region between 2005 and 2010

Component SACFM-2–satellite data CHAOS-6–satellite data
\(\Delta X\) (nT) 5.7 85.7
\(\Delta Y\) (nT) 10.0 21.4
\(\Delta Z\) (nT) 6.9 62.6