Contours of 0.6 times the maximum value of the PV diagrams from Figure 4. The colors represent different offsets along the outflow, as indicated by the text insets. The dotted black line corresponds to the systemic velocity, v_sys ~ 3.6 km s⁻¹, and the dotted gray line shows the mean velocity of the velocity curves, 4.08 km s⁻¹. The solid black curves correspond to a constant specific angular momentum of 70 ± 25 au km s⁻¹ for a central velocity of 4.08 km s⁻¹, where the gray curves represent the limits of the error interval.