Velocity field analysis of the CH₃OH (upper panels) and CH₃CN (lowerpanels) line emission along the disk plane. Left column: pv-diagrams of gas lying along the disk plane (cut at − 33°). Molecular labels are on the upper left corner of each panel. East offsets are measured along the disk plane starting from the YSO position; the same scale in astronomical units is written on the upper axis. For each panel, contours start at 90% of the peak emission and decrease by 10% steps; colours are drawn according to the wedges on the right sides. The rest velocity of the star is set at + 79.1 km s⁻¹. The spatial and spectral resolutions are indicated in the bottom left corners. The CH₃ CN observationshave two times higher spectral resolution than those of the CH₃OH line. Right column: channel maps of the blueshifted jet component at a velocity of + 73.2 km s⁻¹, which contributes to the high blueshifted velocities in the pv-diagrams on the left. Symbols are as in Figs. 1 and 3.