Structural quantities of nucleated (violet) and non-nucleated (green) early-type galaxies in the Fornax main cluster only, as a function of the projected distance. Only galaxies with overlapping stellar mass are shown (i.e. Col. (4) from Fig. 13). The measured (left) and residual (i.e. mass-trend corrected; right) quantities are shown. The solid lines are based on linear fits to the data and are only meant as visual guides to the Spearman’s rank correlation coefficient, r_s. For each quantity, the r_s and associated p values are annotated in the corresponding sub-plots.