SC(3,2) and SC(4,2) [panels (a) and (c)] as a function of minimum $p_{\rm T}$ cuts in $\PbPb$ collisions at $\snn=2.76$ TeV are shown in the left panels. The NSC(3,2) and NSC(4,2) [panels (b) and (d)] are shown in the right panels. Systematic uncertainties are represented with boxes.