The color-coded area shows the distribution for the low-mass cluster set. The solid line with dots on the left of the plot is the reference scale plotted in Fig. 1. Note that the stellar reference scale defines the low mass limit of the distribution. The solid-line contour on the right of the plot, reaching M_clus higher than 10⁴ M_⊙, corresponds to the simulations of the high-mass cluster set (cf. Fig. 4). The inner box shows a detail of the region around 100 M_⊙, where the maximum value of the cluster  is reached.