\begin{table}%t2
%\centering
\par
\caption{\label{table:3}Analysis results for the 7 pairs of the Crab OFF selection.}
\par
\small 
\par
\begin{tabular}{cccccc}
\hline\hline
& Raw       & Prelim.   & Standard  & \multicolumn{2}{c}{$x_{\rm eff} \leq 0.35$ cut}\\
& data      &      cuts     &  cuts  & $\Gamma = 2.0$ & $\Gamma = 2.5$\\
\hline
${\rm N_{OFF_1}}$            & 169~869      & 34~863          & 3131              & 6763            & 7337    \\
%\hline
${\rm N_{OFF_2}}$            & 168~499      & 34~692          & 3147              & 6737            & 7383    \\
%\hline
${\rm N_{OFF_1}-N_{OFF_2}}$  &  --           &      --        &   $-16 \pm 71$  & $26 \pm 92$     & $-46 \pm 94$ \\
%\hline
$N_{\rm \sigma}$           &  --   &  --  & --0.17 & 0.17  & --0.32\\
\hline
    \end{tabular}
\end{table}