\begin{table}%T5
\caption{$\ell =1$ modes for the best fitting model.}\label{tab5}
%\centering
\par
\small
\begin{tabular}{cccc}
\hline \hline
$k$ & Period (s) & $k$ & Period (s) \\ \hline 1 & 124.6 & 7 & 461.5 \\2 & 244.0 & 8 & 505.1 \\3 & 281.2 & 9 & 533.7 \\4 & 322.0 & 10 & 589.8 \\5 & 364.3 & 11 & 637.5 \\6 & 397.0 & 12 & 680.2 \\ \hline 
\end{tabular}
\end{table}