Inferred pressure normalization P₀ when assuming a cluster mass derived using the mass–richness relation from Gonzalez et al. (2019) and a universal pressure profile (Arnaud et al. 2010). The ratios reported here are normalized by the nominal value for P₀ given in Table 2. As discussed in Sect. 4.1, the observed scatter indicates a true discrepancy, which could be due to deviations from the Gonzalez et al. (2019) mass–richness scaling or to deviations from the Arnaud et al. (2010) ensemble-average pressure profile. If ACA filtering were driving the mass reconstruction, we would expect a uniformly low value for the ratio, which is not observed. The error bars for each of the points incorporates both statistical uncertainties and scatter intrinsic to MaDCoWS mass–richness scaling relation.