All thermal observations divided by the corresponding TPM prediction based on solution #2 in Table 5 as a function of phase angle (top), and as a function of wavelengths (bottom). No trend in observation-to-model flux ratios is visible over the very wide phase angle range from −89° to + 53°, nor over the wide range of wavelengths from 3.55 to 70 μm. The rebinned IRS data are shown as triangles together with the absolute flux error of each individual data point.