Production cross section of electrons from W$^{-}$ (left) and positrons from W$^{+}$ (right) decays at midrapidity in pp collisions at $\sqrt{s}=$13 TeV, compared with POWHEG calculations with the CT14NNLO, CT18NLO and NNPDF4.0 PDF sets. The production cross sections are obtained by integrating e$^{\pm} \leftarrow \textrm{W}^{\pm}$ in the interval $30 < p_{\rm T} < 60$ GeV/$c$. Statistical and systematic uncertainties of the measurement are shown as a vertical line and an open box, respectively.