$I_{\rm{CP}}$ ratio of the $D(z_{\rm T})$ distributions for Pb$-$Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ $\mathrm{TeV}$ in Fig. 3 for data: 0$-$30% over 50$-$90% (red squares), and 30$-$50% over 50$-$90% (violet bullets). The boxes represent the systematic uncertainties, while the vertical bars indicate the statistical uncertainties. Also, the equivalent ratios from the NLO pQCD calculation for Pb$-$Pb collisions, including energy loss, are shown as a band indicating the theory uncertainty.