An example of our stacking procedure: the stacked sSFR profiles, Σ_sSFR, for late-type galaxies in the stellar mass range log(M_⋆/M_⊙) = 10.5−11.0 in field galaxies (left panel), galaxies in pairs (central panel), and galaxies in groups (right panel). Radial distances are normalized to the half-light effective radius r_e. Lines represent the median in each radial bin, and the shaded region shows the 25% and 75% percentiles. Vertical bars are the error in the median, and were computed by the bootstrap resampling technique. Individual profiles are shown by gray lines.