Fig. 3From: Improving estimates of the ionosphere during geomagnetic storm conditions through assimilation of thermospheric mass densityReference (red) and analysis (blue) regression against observations for normalized to 400 km thermospheric mass density results of a Swarm-B and b Swarm-C. The regression fit (straight line) is represented with its confidence interval (shadowed area). The correlation coefficient (R\(_r\), R\(_a\)) improves from 0.6 to 0.8 in both satellites. The RMSE improvement (c) separated by storm phase and satellite (Swarm-B in blue and Swarm-C in red) exhibit an increase with the storm phases from 18% during the quiet day to 55% for the recovery phaseBack to article page