ALMA CO(3 − 2) PV diagrams generated with 3DB along the kinematic major (top panel) and minor (bottom panel) axes. The grey scale and blue contours are the ALMA CO(3 − 2) observations > 3σ, while the red contours are the 3DB rotating disc model (without a radial velocity component). The yellow dots are the fitted rotation curve. The approximate eastern, western, southern, and northern directions are marked in the panels.