\hline & Data  & MC   \\\hline
  ee & 10593 & 11178   \\ 
  \mu\mu   & 15158 & 17061   \\ 
  OF   & 24030 & 23375   \\ 
  SF   & 25751 & 27944   \\ \hline
  R_{\mathrm{SF/OF}}   & 1.071 \pm 0.010 & 1.186 \pm 0.072  \\ \hline