Left panels:Position-velocity diagrams taken across the redshifted outflow lobe (PV_⊥ diagrams), with a $0_{\cdot }^{\mathrm{\prime }\mathrm{\prime }}3$ wide virtual slit centered on the flow axis and perpendicular to it (PA = 318°), with positive x offsets toward NW. The separation of the virtual slit from the source in arcseconds is given in the upper left corner. Right panels: Ellipse fits to the features in the corresponding PV diagram, where an identification was possible. The contour levels are at 5, 10, 20, 30, 40, 50 mJy beam⁻¹. The crosses indicate the sample points, all chosen above an emission threshold at the 3σ_PV level, with σ_PV = 2 mJy beam⁻¹ (see text for details). Color code is green, blue, and red for features B1a, B1b, and B2, respectively. The small magenta ellipse at the bottom left corner indicates the uncertainty ($0_{\cdot }^{\mathrm{\prime }\mathrm{\prime }}3$×0.2 km s⁻¹).