Fig. 2From: Verification of the geomagnetic field models using historical satellite measurements obtained in 1964 and 1970Histograms of the distribution for the differences in the total intensities derived from the IGRF model and directly measured by the Kosmos-49 (a) and Kosmos-321 (b) satellites. Red curve shows the modelled Gaussian distribution function that best fits the empirical distributionBack to article page