Fig. 7
From: COV-OBS.x2: 180 years of geomagnetic field evolution from ground-based and satellite observations
5-years forecasts using and \(\Delta t^o=1\) year, for different observation periods, compared with COV-OBS.x2 in black (with in gray-shaded area the associated \(\pm \sigma \) uncertainties), for the MF (top) and the associated SV (bottom) of Gauss coefficients \(g_1^0\) (left) and \(g_7^4\) (right). Errorbars represent the dispersion (\(\pm \sigma \)) with the ensemble of forecasts