Distributions of soft and hard photon indices separated by best soft excess model. Top: distributions of hard photon index obtained from the PL+PL modelling for sources in the soft excess sample. Sources which are best fit with soft Comptonisation are shown with a purple dotted line and sources best fit with blurred reflection are shown with a solid dark green line. Median values for each sample are shown with vertical lines in the corresponding colours. The shaded histograms indicate the sources with 99% significance on the soft excess. Bottom: as top, but showing the soft X-ray photon index.