Left: $v_2(\Delta \varphi, \Delta \eta)$ distributions of charged particles measured at midrapidity in high-multiplicity (0-10%) p-Pb collisions at $\snn = 5.02$ TeV (top) and semicentral (20-60%) Pb-Pb collisions at $\snn = 5.02$ TeV (bottom). Right: fits fo the two corresponding distributions in p-Pb (top) and Pb-Pb (bottom) collisions. The $p_{\rm T}^{\rm trig}$ and $p_{\rm T}^{\rm assoc}$ intervals are mentioned in the legend.