Mass bias parameter, (1−b_SZ), measured in different studies compared to the values preferred by the Planck base ΛCDM fit to the primary CMB anisotropies (Planck Collaboration XXIV 2016), shown as the yellow band. For reference, we translate results published before the Planck 2013 cosmological constraints became available to values for (1−b_SZ). These are P11 (Planck Collaboration XI 2011), M10, V09, R09 (Rozo et al. 2014b) and R14 (Rozo et al. 2014a). PXX is the 2013 SZ cluster cosmology analysis by Planck (Planck Collaboration XX 2014) and represents the top-hat range used as a prior in that analysis. The WtG and CCCP points are, respectively, from von der Linden et al. (2014) and Hoekstra et al. (2015), with the red arrows showing the corrections estimated by Battaglia et al. (2016); the error bars increase to include the uncertainty on this correction. The Simet et al. (2017), based on lensing stacks of the MCXC catalog, and the LoCUSS (Smith et al. 2016) results are reproduced as labeled. See text for details.