Top panel: UVOIR light curves for the full CSP SN IIn sample. Theoretical light curve tails powered by radioactive decay for different amounts of ⁵⁶Ni are included as dashed lines. Middle panel: temperature evolution derived from BB fits to the time-series of SEDs. For SNe 2005ip and 2006jd we plot the temperature associated with the optical emission (see S12). Bottom panel: radius evolution was computed assuming BB emission. For SNe 2005ip and 2006jd, we plot the radius associated with the optical emission (see S12).