Normed histogram of the photometric redshift of our 56 polarised sources (red), compared to the deep (blue) and medium (cyan) simulations of Bonaldi et al. (2019), where we used a cutoff of 6.25 times our central RMS. We only include sources with flux densities comparable to those of our sample. We also normed the maximum of each sample to 1 in the histogram to allow different sample sizes to be compared with one another.