An estimate of freeze-out eccentricity $2 R^{2}_{\rm side,2}/R^{2}_{\rm side,0}$ for different $k_{\rm t}$ ranges vs initial state eccentricity from Monte Carlo Glauber model [35] for six centrality ranges, 0-5%, 5-10%, 10-20%, 20-30%, 30-40%, and 40-50%. The dashed line indicates $\varepsilon_{\rm final}=\varepsilon_{\rm init}$. Square brackets indicate systematic errors.