Lower panel: cGSMFs of grouped and ungrouped galaxies, as indicated in the legend. The grouped galaxies have further been subdivided into those that are part of a filament and those that are not. We note that our total group sample occupies a volume of just ∼2.4 × 10² Mpc${}^3{h}_{70}^{-3}$. This explains why the cGSMFs of grouped and ungrouped galaxies differ by ∼4 orders of magnitude. Upper panel: Raw number of galaxies as a function of stellar mass in each sample, as indicated.