Fit of the dielectron mass spectrum in INEL (left) and HM (right) pp collisions in the $2 \ptee 3$ \GeVc interval with a three-component fit function to extract the fraction of direct photons to inclusive photons $r$. Statistical and systematic uncertainties of the data are displayed as vertical bars and boxes, respectively. The resulting fraction of direct photons $r$ is shown together with its statistical uncertainty. The templates for dielectrons from LF, HF and direct photons are shown as different dashed lines, and the resulting fit is shown as a solid magenta line. The contributions from $\pi^{0}$ and $\eta$ mesons are also shown as separate lines. See the Appendix~\ref{sec:supplemental} of this letter for the fits of the dielectron mass spectrum in other pair transverse momentum intervals.