Photometric redshift histograms (top) and their probability density distributions (bottom) for one Monte Carlo simulation (left), one cluster galaxy fitted with a simple Gaussian (centre), and an other cluster galaxy fitted with a double Gaussian (right). Solid-coloured curves show the best fit obtained in each case, and dashed coloured curves show the individual Gaussian function for the double Gaussian fits. Black vertical lines indicate the locus of the photometric cluster range z_PHOT = [0.70, 1.07].