Centrality dependence of $nMHC(v_{2}^{6}, v_{3}^{2})$ (left) and $nMHC(v_{2}^{4}, v_{3}^{4})$ (right) in \PbPb\ collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV. Statistical uncertainties are shown as vertical bars and systematic uncertainties as filled boxes.