Comparison of present-day mass segregation between models and observations. Top figure: analysis of the evolved (for 625 Myr) ensemble en3000W6. Bottom figure: analysis of the observational data of Röser et al. (2011). Each single plot contains on the left-hand side the “cumulative” Γ_MST (points) for the 5 (red), 10 (green), 20 (blue), 50 (magenta), 100 (cyan), 200 (brown), 500 (orange), and all most massive stars (black). The right-hand side shows the “differential” Γ_MST (points) for the 5 (red), 6 − 10 (green), 11 − 20 (blue), 21 − 50 (magenta), 51 − 100 (cyan), 101 − 200 (brown), 201 − 500 (orange), and 501-all most massive stars (black). The error bars mark the 1, 2, and 3σ uncertainties. A value of one marks the unsegregated state.