(a) NH₃ (1,1) line width, (b) kinetic temperature, (c) gas pressure ratio, and (d) column density plotted against the projected distance of the cores from NGC 2244. The filled points mark the reliable sample, the open points the candidate sample. The black and the grey lines indicate a running median of the values using non-uniform binning for the reliable and for the whole sample, respectively. The distances are shown in degrees with 1° corresponding to 28 pc at a distance of 1.6 kpc.