Robustness assessment. Each of the three horizontal panels of Figs. 4–6 display the comparison of the various tests of Sect. 3.3 to our reference run (Sect. 3.2). Left column panels: ratio of either M_dust or q_PAH, derived from the test (gray label in the top left corner), to its equivalent with the reference run, as a function of . Galaxies are color-coded according to their type. Right column plot: PDF (normalized) of the distribution of the ratio. The median of the ratio is displayed as an orange solid line. The 1:1 ratio is highlighted as an orange dashed line. This figure shows the influence of various fitting methods.