Correlations between three and four different symmetry planes measured at $\sqrt{s_{\rm NN}} = 2.76$ TeV (red squares) from  and $\sqrt{s_{\rm NN}} = 5.02$ TeV (blue circles). The lines (boxes) represent the statistical (systematic) uncertainties. The agreement between the two sets of data is indicated with its number of $\sigma$ at the top right of each panel.