Left: a column density versus temperature plot comparing mIRn (8 μm neutral, magenta), mIRd (8 μm dark, blue), and mIRb (8 μm bright, orange) pixels within the ℓ = 30° source masks, with the median of each value plotted as a diamond on top. The mIRd points occupy the coldest, highest column density portion of the plot, while the mIRb points occupy a range of column densities and warmer temperatures. The mIRn points at the extreme left of the plot are due to the imperfect definition of the 8 μm masks. Right: a similar plot as the left, but with all points (gray), points associated with a CH₃OH maser (orange) or EGO (green), and 24 μm bright points (magenta). We note that EGOs occupy a mid-range temperature and the highest column density portion of this plot, while the CH₃OH maser points occupy a wide mid-range of temperatures and a high range of column densities. The 24 μm points are associated with higher temperature points and relatively low column density.