Results for cloud model B with $A_{\mathrm{V}}^{\text{ext}}=$ 1 mag and a₀=0.3 μm Mix 1 dust model. Frames a-d show the observed surface brightness maps and frames e-h the corresponding relative 160−500 μm residuals, $(I_v^{\text{OBS}}-I_v^{\text{MOD}})/I_v^{\text{OBS}}$. Frame i shows a map of the 250 μm optical depth from the direct MBB fitting of observations (41^′′ resolution), and frame j shows the same for the fitted model (30^′′ resolution). The last frame shows one-dimensional cross-sections of the model densities along the lines marked with white lines in the previous frames, along the LOS central plane of the model.