Kinematics of four representative galaxies in our sample (see also Fig. B.1). (a): Velocity field (first moment map). We also show the kinematic (white circles) and average (black dashed lines) position angles as well as the beam (grey ellipse) of the observations. (b) and (c): Position-velocity slices along the average major (b) and minor (c, perpendicular to b) axes. The data are represented with a blue background and black contours (grey for negative values), while the best-fitting ^3DBarolo model is shown with red contours. Contours are plotted at 2ⁿ× the noise, with n = 1, 2, …, n. (d) Rotation curve, circular speed, and gas velocity dispersion. We emphasise that the velocity fields are shown for illustration purposes, but ^3DBarolo fits the entire data cube.