Abundance of ProCeps η relatively to the lower mass stars in clusters as a function of time t. The time t_ee, indicating the transition between stars escaping due to gas expulsion (t < t_ee) and evaporation (t > t_ee) is indicated by vertical lines. While the non-mass-segregated clusters (M_ecl ≳ 400 M_⊙) have only small changes in η, the mass-segregated cluster (M_ecl = 100 M_⊙) has an increase in η around time t_ee. To avoid rapid fluctuations due to small number statistics, the plots are terminated when there are fewer than 10 ProCeps in clusters in all realisations of clusters of given mass. The figure represents clusters at R_g = 8 kpc and Z = 0.014.