Bayes factor K computed between the model with the highest evidence (identified by the color of the marker) and the remaining 3 size distributions at each radius, for standard grains in the non-scattering (top panel) and scattering (bottom panel) case. The full color indicates that the Bayes factors K at that specific radius are all >10, i.e. the is a strong evidence for that size distribution compared to the other three discrete values.