Related paper Measurement of the inclusive isolated-photon production cross section in pp and Pb$-$Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV \ Ratio of the \PbPb isolated-photon yields, central (0--50\%) over semi-peripheral (50--70\%) on top, and central (0--30\%) over semi-central (30--50\%) on bottom, for isolation-cone radii $R=0.2$ and 0.4. [png] [pdf] [eps]