Comparison of the differences caused by varying S/N in orbit fractions (upper panels, short axis-tubes: solid lines, box orbits: dashed lines) and circularity distributions (lower panels) for NGC 4550. Thick lines show results of S/N = 150 and the thin lines indicate previous results at S/N = 60 for comparison. Similarly to the difference in the estimated mass, the difference in the orbits caused by binning the kinematic data to different S/N is smaller for the non-parametric kinematic description.