\hline Data & nominator  & den & $\epsilon_{\mathrm{trigger}}$ $\pm \sigma_{stat}}$ \\\hline
  ee & 4370 & 4715 &    0.927 $\pm$ 0.004       \\
  \mu\mu   & 2667 & 2943 &    0.906 $\pm$ 0.006       \\
  e\mu   & 6181 & 6944 &    0.890 $\pm$ 0.004       \\
  && RT    1.030 $\pm$ 0.006  $\pm$ 0.063     \\\hline