Specific intensities per unit of optical extinction derived from a linear fit between the dust emission maps andA_V,QSO are plotted with red crosses and error bars in blue versus the fitted parameter U_min. The top row corresponds to IRAS 100 (left) and Planck 857 (right) and the bottom row to Planck 545 (left) and Planck 353 (right). The DL model values are plotted in black and the renormalized model in red. This plot shows that a U_min-dependent renormalization brings the DL model into agreement with the IRAS and Planck data.