Fig. 25From: Swarm Thermal Ion Imager measurement performanceRMS fit error for the level 1b energy transfer function for models with degree up to 7 in \({\overline{r}}\), 5 in \(y_{2}\), and 5 in \(\Phi\): (a) in order of decreasing rms error, and (b) in order of the number of coefficients in each fitBack to article page