Bottom panel: rotational velocities for each pixel in the peak map (small dots, red dots for the southern half and blue dots for the northern half in the online version) and average values in each radial bin (large symbols). The model-shape has been used to deconvolve the data. Triangles (red in the online version) are for the southern half while squares (blue in the online version) are for the northern half. Top panel: average rotation curve for peak velocities. Bins are 2 arcmin wide in the radial direction.