Velocity anisotropy β_sym at r = r_vir, vs. velocity anisotropy at r = 0, for our nine clusters (colored dots) and for the lower-z clusters of Wojtak & Łokas (2010, black circles). The 1σ error bars are shown. The virial radius is r_vir = r₁₀₀ for the nearby clusters of Wojtak & Łokas (2010), and it is approximated by r₁₂₆ for our clusters. The colors identify our nine clusters, in order of increasing redshift with increasing color wavelength (from blue to brown).