Upper panel: inclusive \ee yield in the 10\% most central \PbPb collisions at \fivenn as a function of DCA$_{\rm ee}$ in the mass range $1.2 < m_{\rm ee} < 2.6$ \GeVmass, compared with the expected e$^{+}$e$^{-}$ contributions from known hadronic decays, including two different estimations for dielectrons from correlated heavy-flavor hadron decays (see text). Bottom panels: ratios data to cocktail, together with two predictions for thermal radiation from the medium . Statistical and systematic uncertainties on the data are shown as vertical bars and boxes, respectively. The total uncertainty of the cocktails are represented as band.