Photometric redshifts estimates. Top: distribution of photoz as a function of the projected distance to the centre. The error bars correspond to 1σ individual uncertainties in the photometric redshift estimates. F2 observed galaxies are marked as red squares. Bottom: average probability distribution function of the 34 galaxies with reliable photometric redshifts in our sample. The line corresponds to the mean values and the shaded region to 1σ from the mean. The lines show the obtained spectroscopic redshift (grey) and its associated errors (red).