3D isodensity surface diagrams for one example test cube in the ISRF-only radiation configuration, comparing the SLoS-cINN prediction results, based on only seven wavelengths, to the ground truth. Here, the two rows show different rotation angles of the given cube. The grey surfaces indicate a density of 10¹⁰ m⁻³, whereas red surfaces mark the 10¹¹ m⁻³ density level. These data are analogous to the 23-wavelength SLoS results shown in Figure B.2.