Integrated intensity maps (left) and intensity-weighted velocity (right) for the HCO⁺ J = 4− 3 (top), H¹³CO⁺ J = 4− 3 (middle) and HC¹⁵N J = 4− 3 (bottom) transitions generated using the Keplerian masks shown in Figs. 1 and A.1. The S/N of the integrated intensity maps are 20, 3 and 3, respectively. The intensity-weighted velocity maps were made using a 3σ clip in the channel maps. The dotted white lines mark the major and minor axes of the disk.