Upper panel: dust temperature − mass diagram. The solid black contour contains 90% of all the sources. The grey scale shows the source surface density in the diagram for starless sources. Orange triangles: protostellar sources with flag [1] from method A (tip-down) or B (tip-up). Red diamonds: protostellar sources from both methods (flag [2]). Blue circles: protostellar sources with AKARI 65 μm counterpart. The green and orange step lines are the dust temperatures averaged over bins of the log ₁₀ of source masses for starless and protostellar sources, respectively. The vertical bars are the reduced standard deviations for each bin-average and show that the two populations are significantly separated, on average. Lower left panel: peak position of the best log-normal fit of the reduced CMF as a function of the field-averaged source temperature. Black points are for all sources, green squares are for starless sources, and orange diamonds are for protostellar sources. Lower right panel: same as lower left panel but for the slope of the best power-law fit of the high-mass tail of the reduced CMF.