Normalised redshift distributions. The histograms represent ϕ(z_phot), from the photometric cluster catalogue, while ϕ(z_true|W) is predicted from Eq. (11), using the theoretical halo mass function model by Tinker et al. (2008), with cosmological parameters provided by Planck Collaboration VI (2020, along with Table 2, TT, TE, and EE+lowE), then convolved with our photometric window function, W. The shaded areas indicate the limits of our photometric redshift bins.