Maps of 250 μm optical depth and 850 μm surface brightness. In τ(250μm) maps, white and black contours show the extent of the LM and M850 source masks, respectively. Dashed ellipses show the FWHM size of PGCC clumps (numbers at the PGCC centre coordinates refer to the numbering in Table H.3). The stars stand for the Class I-II (cyan stars) and Class III (yellow stars) YSO candidates (Marton et al. 2016). In the S(850 μm) maps, the clumps of the P(χ²) = 85% sample are indicated with white contours and the other clumps with grey contours.