DSS images and CO spectra obtained towards the 42 BRCs towards which emission is detected. The DSS images presented in the left panels are overlaid with contours of the MSX 8 m emission which traces the PDR. The position of the IRAS point source associated with each cloud is indicated by a cross. Embedded MSX 21 m point source associated with each cloud are indicated by a triangle. In the right panels we present histogram plots of the three CO transitions and the fits to the data; these are coloured in black and red respectively.
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