Left: mean T_ex map of the G305 complex. For each pixel this was calculated by integrating over all the channels. Only those channels that had emissionabove 5σ noise level were considered. Right: integrated ¹³CO Column Density map of G305. This was calculated by summing the ¹³CO total column density per channel over all the channels. Overlaid on top, are the positions of the HII regions (triangles), UC HII regions (diamonds), and the BRC (star) as determined by Hindson et al. (2012, 2013).