Coadded and binned rotation curves. The individual and binned RCs are shown by blue thin curves and squares connected with a dark blue line, respectively. The central velocity () and the number of data points per bin are printed in the legend of each panel. For example, the notation (15; 64) means that the central circular velocity of the bin is 82 km s⁻¹ and that it contains 15 RCs and a total of 64 data-points. We note that here is the circular velocity computed at (=2.95 R_e).