Comparison of spectra at selected positions (Fig. 2) in G183. Panels in top, middle, and bottom rows correspond to positions S1, S2, and S3 with offsets (in arcseconds) (0, 0), (−15, −96), and (123, −125) respectively. All 3 mm spectra are convolved to a common resolution of 28″, while the 1.4 mm spectra are convolved to a resolution of 14″. CO(3–2) has a native resolution of 15″. The vertical dashed line in the top row of the middle column panel shows the velocity ranges chosen for analysis of the blue and red wings of the spectra.