Distribution of δ_i, V values of the deviation of the local mean velocity from the global velocity (according to the DSV test, see text). The histogram with the solid line shows the observed galaxies. The histogram with the dashed line shows the galaxies of the simulated clusters, normalized to the number of observed galaxies. The blue vertical lines indicate the |δ_i, V|> 3 regions where we expect to find substructure members.