Mass–size diagrams for the galactic sources of our catalogue with distances between 0 and 200 pc (first row), 200 and 400 pc (second row), 400 and 600 pc (third row), and 600 and 800 pc (forth row). The masses are derived as explained in Sect. 4.2 and the sizes are the deconvolved linear sizes derived from getsources output for the column density map. As a comparison, the pale green band and white lines show the correlation observed for CO clumps (Elmegreen & Falgarone 1996). The two solid black lines indicate the loci for critical isothermal Bonnor-Ebert spheres at T = 7 K (lower line) and T = 20 K (upper line). The colour scale indicates the distance of sources in frame a), and the dust colour temperature of sources in frame b). Frame c) compares the location of starless sources (grey scale) to protostellar sources (points). The bin-averaged temperature curves for starless and protostellar sources are over-plotted in green and orange, respectively. The vertical bars are the standard deviations for each bin-average.