A contour plot to show the effect on redshift estimation a) before and b) after cleaning a catalogue which is at a signal-to-noise of 2.0, and cleaned with an FDR threshold of 4.55% allowed false detections. Contours indicate the fraction of points enclosed within them. Just under two thirds of all the estimated redshifts lie on the diagonal (and are thus correct) before cleaning being applied. Clearly outliers still exist after cleaning of the catalogue (off-diagonal), where the redshift estimation has failed, but as it can be seen, these are very few, and the result has a high certainty, with 94.9% of the estimates being correct. The capture rate for this catalogue and at this FDR threshold is 76.2%.