Fig. 5

Comparing Swarm and CS10 model data before/after removing an offset—multiple events. Comparison of the along-track and cross-track ion drift measured by the Swarm A satellite and the corresponding CS10 statistical models for 70 northern hemisphere passes during May–September 2014 for periods of quasi-stable IMF and solar wind. Comparisons are performed both before (top row) and after (bottom row) removing an offset from the Swarm data. Data were binned in increments of 50 m/s. The number of occurrences in each bin is indicated by color according to the color bar shown. The best-fit line to the data (heavy black line) and correlation coefficients are indicated. The dashed line indicates perfect agreement