Deviations in the mean redshift (top) and the redshift standard deviation (bottom) using the SGP method for the same bin configuration as in Fig. 21. The Euclid requirements on the uncertainty are highlighted by the shaded area centred around zero. For some bins (particularly bins 1, 3, and 7), we observe slightly larger deviations and uncertainties than permitted on the mean redshift. However, a clear improvement compared to previous work (shown in red) is still evident. The redshift standard deviations are unbiased and fall within the required range (shaded sandy area).