68% and 95% posterior confidence regions for the four eTNS parameters fσ₈, b₁σ₈, b₂σ₈, and σ_v, obtained from the MCMC modeling of the redshift-space radial and transverse wedges of galaxy clusters in the scale range ﹩10\lt s\left[{\rm{Mpc}}\,{h}^{-1}\right]\lt 80﹩. The vertical dashed blue lines show the first quantiles of the 1D marginalized distributions. The solid orange lines show the Planck 18 fσ₈, b₁σ₈, and b₂σ₈ predictions, with b₁ being estimated by Equation (28) with the Tinker et al. (2010) model, and b₂ from Equation (29). The dashed orange lines show the linear-order estimate of the one-dimensional velocity dispersion given by Equation (30).