Comparison of estimated column density and average temperature maps for one example cube in the ISRF-only RT configuration between a classical SED fit and our cINN approach. The large panels on the top show the ground truth for the column density (left) and density weighted average temperature (right), respectively. The smaller panels below each ground truth panel present a map of the estimates from the respective method on the left and a map of the absolute relative error |e_rel| on the right. The example cube as in Figs. 3, B.1, and B.2 is shown.