Purity vs. completeness mean values for the membership assignments. For each cluster galaxies brighter than H∗(zp) + 1.5 and with a projected distance from the cluster center not greater than r200 are considered. Different colors refer to different statistical redshift accuracy σ(z) = σ0(1 + z). Dots show the mean values of both completeness and purity for galaxies with Pmem>Pthr, as indicated in the label. Pthr increases from the right to the left. The errors in the mean values are within the dot size.
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