Amplitudes of the relative radii oscillations $R^{2}_{\rm out,3}/R^{2}_{\rm side,0}$, $R^{2}_{\rm side,3}/R^{2}_{\rm side,0}$, and $R^{2}_{\rm os,2}/R^{2}_{\rm side,0}$ versus centrality for four $\kt$ ranges. Square brackets indicate systematic uncertainties. The shaded bands are the 3+1D hydrodynamical calculations and the width of the bands represent the uncertainties in the model calculations | ![](https://alice-publications.web.cern.ch/sites/default/files/papers/4218/Third-90072.png ) |