Model first moment maps for a disk with an outer disk PA of 145°, an inclination of 36°, and an opening angle of 9° and which has a radial flow component to the gas velocity with a scaling factor for the radial flow χ, of 0.2 (left), 0.5 (middle), and 0.8 (right). The transition radius in all models is 100 au. The contours are in units of a single spectral resolution element (0.21 km s^-1).