Same as in Fig. 1 but with a lower limit added to the radial profile. The left (right) column shows the data for a two power law (bimodal) IMF. From top to bottom, we show the effect of decreasing resolution of the inner radial region by dropping the inner zero to three supporting points of the reconstructed mass profiles used for the NFW-fit. The colour bar indicates the mean average error of the fits in units of 10⁹ M_⊙.