Fig. 2.From: The BGS magnetic field candidate models for the 11th generation IGRFRoot-mean-square of residuals between model and input data from (a) CHAMP, (b) Ørsted, and (c) observatories. The RMS values are calculated over 10 day periods using all components (X, Y, Z, and F). To improve robustness of statistics, ten day periods with fewer than 10 data are not plotted.Back to article page