Related paper Azimuthally-differential pion femtoscopy relative to the third harmonic event plane in Pb-Pb collisions at $\sqrt{\textit{s}_{_{\rm NN}}}$ = 2.76 TeV The amplitudes of radii oscillations $R^{2}_{\rm out,3}$, $R^{2}_{\rm side,3}$, $R^{2}_{\rm long,3}$, and $R^{2}_{\rm os,3}$ versus centrality percentiles for four $\kt$ ranges. Square brackets indicate systematic uncertainties [png] [pdf] [eps]