Radial velocity υ_rad profile perpendicular to the jet axis for 00 S(1)–S(5). Positive values correspond to blueshift. Each datapoint is the median radial velocity along the spaxel column of the rotated image (see Section 3.2). The solid curves are second-order polynomial fits to the data. The curves are offset for clarity. The offset for each curve is annotated in the figure in the same colour.