Distribution of source size ratios (HST/MUSE) in the nebula catalogue within each environment (Querejeta et al. 2021). Shown is the ratio of the size of each region identified in both the HST or MUSE observations (see Fig. 4 for full distribution, and see Fig. F.1 for distribution of r_circ for each environment). We show the histogram and cumulative distributions as solid filled and dashed lines, respectively (see upper left number of regions in each histogram). For comparison, all distributions are normalised to unity and overlaid on each panel as light dashed grey lines are the cumulative distributions from the other panels.