Dependency of member recovery rate (colour scale) for membership probability above 90% on cluster age and distance for four initial masses. Upper left: 500 M_⊙. Upper right: 1000 M_⊙. Lower left: 2500 M_⊙. Lower right: 5000 M_⊙. The 10⁴M_⊙ simulations have an MRR₉₀ ≫ 80 across most of the considered age-distance plane and are not represented in the figure. The dots mark the regions of the plane sampled by the simulations.