Curves give the evolution of the instantaneous total bound stellar mass log ₁₀(M_cl(t)) for the calculations in Fig. 6 that include an initial gas dispersal phase (see Table 4, top part and text). In both panels, data points corresponding to the same young massive clusters and associations (in the top and bottom panels, respectively) as in Figs. 3 and 6 are used, but without colour-coding. The same set of curves are overlaid on both panels and the legends are given in the top panel.