Unidentified charged particle $v_2$, $v_3$, and $v_4$ integrated over the transverse momentum range $10< \pt< 20$ GeV/$c$ as a function of collision centrality, with the more central (peripheral) collisions shown on the left-(right-)hand side, respectively. The dashed line represents the WHDG model calculations for neutral pions extrapolated to the LHC collision energy. Error bars (shaded boxes) represent the statistical (systematic) uncertainties.