Comparison of parameters for alternative models. Each frame shows parameter distributions for the models (see Table 1) and for the PGCC. The distributions are plotted using kernel density estimates (“violin plots”) with the quartile points indicated with horizontal lines. Frames a–i: clump 850 μm flux density, 850 μm flux density in the cold residual map, 100 μm background intensity, clump temperature, physical size, and aspect ratio, detection S/N, and the intensity and polarisation fraction contrasts (calculated as ratios of the mean values at radiae R < 4 ′ and R =10′–16′). Model results are for the distance of d = 231 pc. The PGCC distributions are plotted for selected quantities, for clumps with FLUX_QUALITY=1 and distance estimates within a factor of 1.5 of the nominal distance.