Integrated direct-photon yield in the $p_{\rm T}$ range $1 < p_{\rm T} < 5$ GeV/$c$ (or $1 < p_{\rm T} < 3$ GeV/$c$) in Pb$-$Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV and $\sqrt{s_{\rm NN}}=2.76$ TeV, in AuAu collisions at $\sqrt{s_{\rm NN}}=0.2$ TeV as measured by the PHENIX and STAR collaborations, and in pp collisions at $\sqrt{s}=0.2$ TeV The data are compared to predictions from a state-of-the-art model. The error bars and boxes represent the statistical and systematic uncertainties of the data along the y-axis, respectively. The horizontal width of the boxes shows the total uncertainty of the measured $\frac{{\rm d}N_{\rm ch}}{{\rm d}\eta}|_{\eta = 0}$.