Spatially resolved profile of the central outflow velocities (projected) for CO(2−1) (left) and for [O III] (right). Blue and red symbols correspond to blueshifted and redshifted velocities. For comparison, we also show the central velocities of the slices (pale blue and magenta squares; see Sects. 3.2 and 4, and Appendix A). The black circle indicates the cleared molecular gas region.