Left panel: ¹²CO channel maps at (V − V_sys) = 2.15 km s⁻¹ and (V − V_sys) = 5.00 km s⁻¹. The two white dashed lines trace the outer and inner cones (see text). Only one side of the outflow is shown in each of the two channel maps. The color scale is the same for the two channel maps. Right panel: transverse PV diagrams at δz = 2.5″ and δz = 6″ obtained along the C1 and C2 cuts shown on the channel maps and averaged on a slice of Δz = 0.2″. The black contours trace the 2σ and 5σ levels. The two white points represent the symmetric edges of the PV diagrams at δx = ±0.85″ and δx = ±1.8″, respectively. Their velocity difference gives an estimate of the rotation velocity (see text).