Three left upper panels: initial conditions of our models containing 52 stars: seg and Šubr are initially mass segregated with S = 1 and S = 0.5, respectively, and non is without any initial mass segregation (S = 0), see Sect. 2. Lower panels: models in a slightly evolved stage (at 0.5 t_cr and 1.0 t_cr). The solid line in each plot represents the average position for a star of a given mass in 100 realisations, whereas the lighter crosses are the positions from one random realisation. The power-law fit of both seg and Šubr models is shown by the grey dashed line. For comparison, right panels: observed data and the fitted slope (cf. Plunkett et al. 2018); the same dataset is used in all rows. We note that the horizontal axis of each plot is in projection to the xy plane.