\begin{table}%t3
      \caption{Cumulative numbers of sources.}
         \label{tab3}
%\centerline
{
     \begin{tabular}{rrrrrrr}
\hline  \hline
 Flux  & & \multicolumn{2}{c}{C\_90} & & \multicolumn{2}{c}{C\_160} \\
 (mJy) & & LHEX & LHNW & & LHEX & LHNW \\
\hline
 400 & &   1 &   0 & &  2 &  0   \\
 283 & &   3 &   0 & &  6 &  2  \\
 200 & &   5 &   8 & & 16 & 11  \\
 141 & &  22 &  24 & & 35 & 27  \\
 100 & &  81 &  67 & & 42 & 28  \\
  70 & & 112 &  97 & & 44 & 28  \\
  50 & & 116 & 107 & & 44 & 28  \\
\hline
Area (deg$^{2}$)$^a$ & 
           & 0.452 & 0.452 & & 0.443 & 0.442 \\
\hline        
 \end{tabular}}
\medskip
$^{a}$ Survey areas observed at the specified band. 
 Note that the common areas that were observed at the both bands 
are 0.426~deg$^{2}$ in LHEX and 0.431~deg$^{2}$ in LHNW.
  \end{table}