Fraction of outliers (top) and accuracy (bottom) as a function of magnitude (z from LS8), 0.2–2.3 keV X-ray flux, and spectroscopic redshift split for type (EXT/PLIKE) and in area (with/without VIKING coverage). The x-axes are binned in equal numbers of elements, taking the quantiles between [0,1] in steps of 0.1. In other words, all lines also account for the size of each spectroscopic subsample.