Raw $p_{\textrm{T}}$ distribution for e$^{-} \leftarrow \textrm{W}^{-}$ (left) and e$^{+} \leftarrow \textrm{W}^{+}$ (right) candidates after the isolation conditions together with the estimated background from heavy-flavour hadron decays and Z$^0$ decays in pp collisions at $\sqrt{s}=$ 13 TeV. The symbols are placed at the centre of the $p_{\rm T}$ interval. The statistical uncertainties are represented by vertical bars.