\begin{table}%t8
\caption{Comparison with results by David et~al.}\label{tab8}
%\centerline
{
\begin{tabular}{c c c c}
\hline
\hline
$M_{\rm B}/M_{\rm A}$ & Boundary S/MS & Boundary MS/U & DQFA \\
\omit                 & [AU]          & [AU]          & [AU]\\
\noalign{\smallskip}
\hline
  0.1 & 0.437 $\pm$ 0.001 & 0.457 $\pm$ 0.001 & 0.31 $\pm$ 0.04 \\      
  0.5 & 0.278 $\pm$ 0.001 & 0.348 $\pm$ 0.001 & 0.28 $\pm$ 0.02 \\      
\hline
\end{tabular}}
\medskip
Note: Simulations were performed for giant planets with $M_{\rm G}$~= 1~$M_{\rm Jup}$, whereas David et~al. (\cite{Davi03}; DQFA) assumed Earth-mass planets.
\end{table}