Upper panels: examples of correlation maps of the three free parameters W, σ_gran, and b used in Eq. (27) using two Harvey-like profiles with color-coded likelihood values. Each point in the diagram is a sampling point that stems from the NSMC process. The plotted realization consists of ~27 000 samples. Lower panels: corresponding MPDs of the free parameters as computed by means of Diamonds. The shaded region indicates the portion of the distribution containing 68.3% of the total probability, defining the shortest credible intervals listed in Table 1. The dashed line indicates the mode of the distribution.