Median values of Ṁ_acc as function of M_∗. Red lines (with a central square) refer to σ Ori Class II and TD disks; the lowest mass bin should be considered as an upper limit only (see text). Blue lines (crosses) show the distribution for ρ-Oph (data from Natta et al. 2006, see Appendix A); green lines (circles) for Tr 37 (data from Sicilia-Aguilar et al. 2010). (A color version of this figure is available in the online journal.)