Percentage of outliers versus spectroscopic redshift (upper panel). The solid (dashed) lines correspond to point-like (extended) sources for the TPZ (green) and LePHARE (purple) results. Shaded regions represent the uncertainty in the percentage of outliers at each spec-z bin, calculated as the percentage of outliers divided by $\sqrt{N}$, where N is the number of sources in each bin. Larger sample sizes result in narrower shaded regions. The bottom panel shows the distribution of the training sample with spectroscopic redshifts in each case.