M₅₀₀ estimated from the joint detection for the 696 ComPRASS candidates matching a confirmed MCXC cluster vs. the published M₅₀₀ of the corresponding cluster. The dotted red line indicates the line of zero intercept and unity slope. The solid blue line indicates the median ratio. The dashed blue lines indicate the interval of ±2.5σ around the median ratio. Outliers are highlighted with a blue (high estimated mass) or red (low estimated mass) square; see text. Cyan crosses indicate MCXC clusters that are not in Planck or SPT.