\begin{table}%t1
\caption{\label{t1}Adopted limits of target selection as a function of angular \mbox{separation}.}
\small%\centering
\par
\begin{tabular}{c c c c c  }
\hline \hline\noalign{\smallskip}
 {Limit}
&  {$\rho \leq 1.5'' $}
&  {$\rho \leq 5'' $}
&  {$\rho \leq 12'' $}
&  {$\rho > 12''$  } \\ 
\hline
$\Delta \rho$/$\rho$ (\%) & 55 & 20 & 8 & 10   \\
Absolute  & 0.8\arcsec & 1.0\arcsec & 1.0\arcsec & $>$$1.5$\arcsec   \\
\hline
\end{tabular} 
\end{table}