\begin{table}%t2
%\centering
\par
\caption{\label{tab:sum} Summary of the total detections, single band detections, faintest flux limits,  flux limits at 50\%, 90\% of the 
total area  and  flux limits observable on 
the full area in the 0.5--2~keV, 2--10~keV and 5--10~keV energy bands, respectively.}
 \small \begin{tabular}{ccccccc} 
\hline \hline
Band & Total detections & Single-band detections&$S_{\lim}$&$S_{50\%}$ & $S_{90\%}$& $S_{\rm fa}$\\
 &   &    & \flux/10$^{-15}$ & \flux/10$^{-15}$ & \flux/10$^{-15}$ & \flux/10$^{-15}$\\
\hline
0.5--2~keV & 1621 & 771 & 0.50   & 1.00 &   1.70  & 3.00\\
2--10~keV  & 1111 & 237 & 2.50 &  5.60&   9.30    & 15.00    \\
5--10~keV  & 251  & 5   & 5.10  &  11.00 &   13.0 & 20.00    \\
\hline
\end{tabular}
\end{table}