PV-diagram of the outer disk cloud along a cut with a position angle of 49° East of North, made with the datacube tapered at 90 m. The Y-axis indicates recession velocity in   km  s^-1 from slower rotation (− 258     km  s^-1) to faster rotation velocities. The X-axis indicates the distance from the center in arcseconds, with negative values being to the south-west. The color scale is in Jy per beam. The bar to the lower left indicates 4′′, as the beam measures 4.50 × 3.49′′.