Clusters in MCXC-II shown in the ɀ–M₅₀₀ plane. Left panel: new objects marked in colour, which include new REFLEX-II clusters, new MACS clusters above ɀ = 0.3, and new RXGCC clusters, as well as NORAS, 400SD, and SGP clusters that were previously without redshift. Right panel: objects with revised redshifts (see Table. 6) are marked in colour, as labelled in the figure. The revised position (filled circle) is connected to the MCXC-I position (open circle).