Histograms of the normalised occurrence (black circles) and κ-Gaussian distributions (red lines) of the (from left to right) total, perpendicular, and parallel γ. From top to bottom: SCSW, FCSW, and HSS for all the SIR events on our list. The Pearson R and the root mean square error (RMSE) of the fitted κ-Gaussian versus the normalised histogram values are shown at the top of each panel.