Distribution of T_bol and L_smm/L_bol, for the protostars in the simulation (red contours), and from observations (black dots). The contour levels cover 90%, 80%, 70%, ...of the simulated points. The marginal distributions of each variable are shown as histograms at the edges. The observations are a conjunction of data from c2d, GB, and HOPS (see Dunham et al. 2014). Protostars are expected to evolve from upper right to lower left. For the fraction of (synthetic) points recorded in each quadrant see Table 4.