Coherent J/$\psi$ cross section as a function of $\pt$ in Pb-Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV measured in the 50-70% and 70-90% centrality classes. The error bars indicate statistical uncertainties, while the systematic uncertainties, excluding those considered as global (see text for details), are shown as boxes. Data are compared to calculations from W. Zha et al.