Comparison of model light curves and spectra with the observations of SN 2011dh. Top: photometric data (black symbols) shifted in time by +7 d and in magnitude by −0.2 mag as well as the results for model logP2p80 (solid line). Middle: same as top but for the model 3p65Ax1 of Dessart et al. (2015), now with a shift in time of +6 d. Bottom: Comparison of multi-epoch spectra at about 5, 15, 30, and 85 d after explosion for SN 2011dh and models logP2p80 and 3p65Ax1.