\begin{table}[h]
\begin{center}
\begin{tabular}{|c|c|c|} \hline
 &  Electron Channel &  Muon Channel\\
 \hline \hline
Data & 0 $e^+$,1 $e^-$ & 5\\ \hline \hline
$W$ production & $ 1.65 \pm 0.47$  &$  0.53 \pm 0.11$ \\ \hline
$Z$ production &$0.01 \pm 0.01 $ & $ 0.01 \pm 0.01$\\ \hline
Charged Current & $0.02 \pm 0.01$ &  $ 0.01 \pm 0.01$ \\ \hline
Neutral Current & $ 0.51 \pm 0.10$ $e^+$, $0.02 \pm 0.01$ $e^-$  & $ 0.09 \pm 0.06 $ 
\\ \hline
Photoproduction &   $<0.02 $    & $<0.02$ \\ \hline
Heavy Quarks &  $<0.04$  & $<0.04$\\ \hline
Photon-Photon & $ 0.09\pm 0.03$ $e^+$, $0.04 \pm 0.01$ $e^-$    & $ 0.14
 ^{+0.14}_{-0.07} $
 \\
 \hline
\end{tabular}
\\
\caption{Observed and  predicted event rates.
The  limits given correspond to 95\% confidence level.
Unless stated otherwise the quoted numbers refer to the summed
production of  both lepton charged states. }
\label{tableback}
\end{center}
\end{table}
