pv-diagrams along the Δδ axis and averaged over the extent of the cube (top row) and along the Δ α axis (bottom row) of the CO (3–2), SO₂, HC₃ N (J = 37–36), and HC₃N v₇ = 1 (J = 38–37) transitions from left to right panels, respectively. The dotted lines show the v_lsr of the source and the position of the dust continuum peak. The dashed lines indicate velocities of v_lsr ± 4.5 km s⁻¹, roughly corresponding to the velocities of the CH₃OH peaks. The red rectangle in the lower left panel corresponds to the region shown in the other panels. The contours start at 20% of the peak and increase by 10%, except for the panel of the CO and SO₂ lines, where the lowest contours start at 5% of the peak.