Left: ratio of the observed [O i] 63 μm/[C ii] ratio over the predicted [O i] 63 μm/[C ii] ratio (color bar). The pressure contours of between 4.5 × 10⁵ and 1.3 × 10⁶ cm^-3 K are indicated in black. The red circle shows the location of R136. Right: filling factor Φ_A between 0.6 and 9 (color bar). The lowest values are at the peak of G_UV. The black contours represent the ¹²CO(2–1) emission from ALMA (Indebetouw et al. 2013)