Velocity-resolved spectra at representative positions, all from maps convolved to 15″ (except CO 10–9, with a beam of 20″). Left: Complete spectra, with offsets in arcseconds given in parenthesis; continuum levels of [C II] 158 µm and [O I] 145 µm shifted for clarity. The OH 163 µm emission lines (yellow) are scaled by a factor of three or five. Right: zoom on faint line wings and foreground line features.