Integrated CO emission in the SW bar and DarkPK. All maps were obtained with the moment-masked method. The left panels correspond to the transition J = 3–2, while the right panels show the CO emission in the transition J = 2–1. The spatial resolution of 30″ is indicated in the bottom right corner of all maps. The upper panels show the SW bar CO(3–2) and CO(2–1) map used to determine the ratio represented by R₃₂ pixel-by-pixel. The lower panels show the DarkPK maps with white crosses indicating six positions (A, B, C, D, E, and F), where the CO(3–2) and CO(2–1) spectra were extracted to calculate R₃₂. A color-scaling bar is shown in the top of each map.