Left panel: radial profile of the c₁/sin(i) ratio, which represents the best fit obtained by kinemetry for the deprojected axisymmetric circular component of the velocity field (v_circ; black curve and filled symbols). We also plot the radial profile of the deprojected noncircular motions (v_nonc/sin(i)) derived from the Fourier decomposition until third order (red curve and open symbols). Middle panel: variation of the absolute value of v_nonc/v_circ ratio as function of radius (black curve and open symbols). Right panel: variation of the s₁/c₁ ratio as function of radius. The s₁ coefficient represents the best fit of the (projected) axisymmetric radial component of the velocity field (black curve and open symbols). The hatched gray-filled rectangles in panels (b) and (c) identify the region where the solution found by kinemetry is judged less reliable.