\begin{table}%t3
\caption{\label{tab:freqF}Fundamental frequencies for~S2.}
%\centering
\par
\begin{tabular}{crr}
\hline\hline \noalign{\smallskip}
 & Frequency   & Period \\
 & $\degr/\rm yr$ & $\rm yr$ \\
\hline
$n_\sb$ & 513.157691 & 0.70 \\
$n_\sc$ & 102.363620 & 3.52 \\
$g_1$ & 0.025537   & 14097.19 \\
$g_2$ & --0.455042  & 791.13 \\
$l_\theta$ & 4.492737 & 80.13 \\
\hline
\end{tabular}
\tablefoot {$n_\sb$ and $n_\sc$ are the mean motions, $g_1$ and~$g_2$ are the secular frequencies
associated with~$\varpi_\sb$ and~$\varpi_\sc$ respectively, and~$l_\theta$ is the libration frequency of the resonant angle $\theta = \lambda_\sb - 5\lambda_\sc + \varpi_\sb + 3\varpi_\sc$.}
\end{table}