Fig. 6From: Improving estimates of the ionosphere during geomagnetic storm conditions through assimilation of thermospheric mass densityElectron density global improvement at 400 km between analysis and reference with respect to the B-Spline model for the complete storm (quiet, main phase and recovery days). The main area of improvement (red) is around the equatorial area between (−45, 45)\(^\circ\) latitudeBack to article page