Global accuracy of photometric redshifts with respect to spectroscopic samples (all fields together). z_phot values are the median of the three runs described in Sect. 5; N is the number of sources; f_outliers is the percentage of sources with |z_phot − z_spec|/(1 + z_spec) > 0.15. The other statistics are computed on non-outliers, with NMAD=1.48 × median[|z_phot − z_spec|/(1 + z_spec)]. Colour-coding is < S/N >= (S/N_F444W + S/N_F356W + S/N_F277W + S/N_F200W)|4.