Difference between the model and observed flux divided by the observed flux uncertainty for the best-fitting spectral template at spectroscopic redshift. Each panel shows the distribution for different passbands. The blue-shaded histogram shows the distribution before flux uncertainty scaling. The solid black histogram shows the distribution after flux uncertainty scaling. The dashed grey line shows the Gaussian distribution with unit variance. See Sect. 4 for a detailed description of the flux and flux uncertainty corrections. As expected, the flux uncertainty scaling is shifting the normalised distribution closer to the theoretical Gaussian distribution. Table 1 gives the flux uncertainty scaling parameters for different passbands.