Comparison of S/N values for clusters in ACT, Planck, and PACT maps as function of angular size. The ratio of the S/N obtained from PACT to the S/N obtained from the native ACT data (orange dots) or Planck data (blue dots) is plotted versus the angular size of the cluster. Each dot stands for one of the 119 clusters reported in Planck or ACT catalogs with size of symbol proportional to the PACT S/N.