Cumulative distribution of richness-based halo masses measured for our sample of 28 SZ detections, selected from a total area of 14 sq. deg (solid). Expected cumulative distribution of the richness-based halo mass of the 28 richest systems between 0.4 <z< 1.0 (dashed) per a random area of 14 sq. deg, in our assumed cosmology. Same but for a Planck CMB cosmology with WMAP polarisation Planck Collaboration XVI (2014; dotted). A 25% lognormal scatter on the richness at fixed halo mass is assumed, and each curve includes hydrostatic mass bias.
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