Same as Fig. B.5 for comparisons between the Δl = 1°.25 THOR HI observations centered on l = 34°.55 and the Δl = 1°.25 GRS ¹³CO tiles centered on l = 32°.05 (top left panel), 33°.3 (top right panel), 35°.8 (bottom left panel), and 37°.05 (bottom right panel). The large differences between the top left in Fig. B.5 and these panels indicate that the effect of chance correlation in the results of the HOG method is small.