Inferred parameter distributions for the test cluster sample. The panels show the following parameter combinations: (a) mass vs. age, (b) extinction vs. age, (c) size vs. age, (d) extinction vs. mass, (e) size vs. mass, and (f) size vs. extinction. Diagonal cutoffs in panels (a) and (b) are related to the cluster detection limit, applied as magnitude cuts, shown in Fig. 3. The color map represents the visibility parameter, which acts as a proxy for the selection effects in a magnitude limited sample, while also taking into account variable cluster sizes and extinctions.