Original LRI (upper) and residual after fitting (centre) on a FORS2 R-band image; the sources with green squares correspond to the ones selected by eye as deviating from the global distribution in the bottom plot (the blue open circles; red dots are the whole catalogue), where the standard deviation of the residual of each source has been plotted against the absolute value of the mean of the residual (both values have been taken from the output file from t-phot).