Best fit model for the intensity-weighted velocity field of the ¹²CO emission in the disk (middle panels) for a Keplerian disk (bottom row) and a warped disk (top row). We note that we only compare the velocity field in those regions where the CO emission is above a 5σ threshold inthe observed moment 0 map. We show the observed intensity-weighted velocity field in the top left panel, and the residual after subtracting the model from the observations in the right panels.