Evaporation age, t_eva, versus simulation age, t_sim, for the clusters in the simulation within three different bins of the number of stars, n_eva, 70, from which the evaporation age was calculated. The left panel has 86 clusters, the middle one has 45 clusters, and the right one has 15 clusters. The dashdot red line corresponds to ϕ_eva, 0 t_sim, where ϕ_eva, 0 is the median value of the age ratio t_eva/t_sim (Eq. (1)) in each bin. The scatter, σ_eva, 0, is the standard deviation of the ratio of the corrected (see Eq. (2)) of the individual clusters with respect to their t_sim, as explained in Eq. (3). The black dashed line is a least-squares fit, f(x), showing that the slope is very close to unity and thus ϕ_eva, 0 does not depend on the age of the cluster.