Comparison of averaged experimental MAC with the MACs calculated from cosmic dust model. The solid line curves with the uncertainty represent the MAC averaged on the four samples X35, X4O, X5OA, and X5OB: (red) MAC at 300 K, (blue) MAC at 10 K. The MAC for the astrosìl from (Li & Draine 2001) was calculated using Mie theory for a 0.1 μm size grain (black), for a log-normal grain size distribution with a mean diameter of 1 μm for spherical grains (red), and for a CDE model (green). We note that to be comparable with the experimental data, the MACs were not modelled in vacuum but in PE.