\hline MC & nominator  & den & $\epsilon_{\mathrm{trigger}}$ $\pm \sigma_{stat}}$ \\\hline
  ee & 3423 & 3573 &    0.958 $\pm$ 0.030       \\
  \mu\mu   & 2575 & 2751 &    0.936 $\pm$ 0.046       \\
  e\mu   & 5405 & 5906 &    0.915 $\pm$ 0.016       \\
  && RT    1.035 $\pm$ 0.035  $\pm$ 0.063     \\\hline