Photo-z accuracy in multiple magnitude ranges. Upper panel: the colours show the distribution of photo-z accuracy, which is given as the difference between the spectroscopic and photo-z estimates. The dashed black line is drawn at zero to identify any biases in the distributions. Lower panel: the distribution of redshift accuracies that are normalised by the width of their photo-z peak computed using Eq. (16). The dashed grey line shows a Gaussian distribution with a standard deviation of one.