MAR as a function of the cluster mass M_200c in the simulations and the MAR of the CIRS, HeCS, and HectoMAP clusters. The open circles show the median MARs of the 26 ΛCDM samples of Table 1, color-coded by redshift. The colored curves are the relation of Diemer et al. (2017) computed at the 11 redshifts of our simulated samples. The squares and the diamonds with error bars show the MAR estimates with their uncertainties of the stacked clusters of the CIRS and HeCS (Pizzardo et al. 2021) and HectoMAP clusters (Pizzardo et al. 2022), respectively.