Comparing the ProDiMo spectrum to the posterior of DuCK-LinG models. Upper panel: posterior distribution of the fit of a ProDiMo mock spectrum. The black line is the ProDiMo spectrum. The blue line shows the median fluxes from the models of the posterior distribution. The zoom-in on the upper left shows an enlarged version of the wavelength region from 22 to 24 µm. Lower panel: residual between the model fluxes and the ProDiMo spectrum. The blue line shows the median residual of all posterior models. The black area denotes the noise that was used to create the mock spectrum.