Variation in over the NE field. Top: H₂ linewidth map (as in Fig. 4). The colored dots mark the aperture over which spectra have been extracted. Three distinct colors correspond to three linewidth ranges: < 35 km s⁻¹ in white and black, 35–42 km s⁻¹ in blue, and > 42 km s⁻¹ in red. Middle: corresponding OH linewidth map. Bottom: spectra extracted over each aperture, normalized according to the 1D Gaussian fit. The black spectra correspond to the white apertures, and the red and blue spectra correspond to the red and blue apertures. The corresponding widths are listed in Table A.1.