Fitted parameters for the various models. Light gray lines represent the PYFAT model, black lines the single disk model, and the blue (approaching) and red (receding) lines the final best-fit model. The panels show the rotation velocities (a), surface brightness distribution (b), inclination (c), PA (d), and radial motions (e), all as function of radius. The vertical dot-dashed gray line indicates R₂₅, and the vertical dashed lines in panel b mark where the surface brightness is equal to 1 M_⊙ pc⁻².