Posterior distributions of the parameters of the mass-amplitude relation as in Eq. (19). The contours show the 1 and 2σ confidence regions of the distributions for the BMO (red) and DK14 (green), both without accounting for the mis-centring of clusters. In Table 3, we report the median values with the corresponding 16th and 85th percentiles for all cases. The black points indicate the median of the posteriors derived by Giocoli et al. (2021) when considering the mis-centring terms and the BMO model in deriving M_200c.