Temperatures T_ℐ and masses M_ℐ derived from fitting images ℐ_ν of both isolated and embedded protostellar envelopes (with the true masses M of 0.03,0.3, and 3 M_⊙) vs. the true model values of T_M and L for correct β = 2. The three columns of panels present results for three angular resolutions indicated (resolved, partially resolved, and unresolved cases). See Fig. 8 for more details.