Moment-8 PV diagrams in three molecular tracers of the jet along the direction with a PA of −60°. The offset is relative to the phase center of the observations. The cross in the bottom left corner indicates the angular and spectral resolutions. (a) Contour map of the H₂CO (3_0,3–2_0,2) line emission overlaid on the SiO(5–4) map. Contour levels range from 22 to 112 in steps of 15 mJy/beam. (b) Same as panel a but for the contour map of the CH₃OH (4_−2,3–3_−1,2) E line emission. Contour levels range from 16.2 to 111.2 in steps of 19 mJy/beam.