PSZ2 cluster counts as a function of the S/N of the SZ detection. The PSZ2-North sample is represented in light blue, the sources that are still not observed are represented in red (< 0.5%), the updated sources described in Sect. 5 are shown in dark blue (3.4%), and the sources that were originally not confirmed and were observed during LP15 and ITP13 are shown in green (18.4% and 4.8%, respectively). The bin size is 0.25.