Photo-z estimation parameter map on a magnitude - ζ_spec grid. The top panel shows the number of galaxies in each bin. The three parameters from the second to the bottom panel are photo-z accuracy distribution width (σ_NMAD value), the bias of that distribution as the median value of the photometric accuracy, and the outlier rate as the number of galaxies with photometric accuracy worse than 0.1. Bins with fewer than 100 galaxies are drawn as grey areas.