\begin{table}%t1
\caption{First linear eigenvalues of the unstable setup used to start the DNS (this setup is denoted by the white cross in the instability strip in Fig.~\ref{fig:IS}). Note that only the fundamental $n=0$~mode is \textit{linearly} unstable.}\label{table}
%\centering
\small
\begin{tabular}{cccc}
\hline \hline
 {mode order} ${n}$ & ${\omega}_n$ &
${\tau_n\ (\times 10)}$ & period \\ 
\hline 
0 & 5.439 & $+0.250$ & 1.155 \\
1 & 8.452 & $-1.816$ & 0.743 \\
2 & 11.06 & $-4.961$ & 0.568 \\
3 & 14.36 & $-4.727$ & 0.437 \\
4 & 17.40 & $-7.825$ & 0.361 \\
5 & 20.66 & $-9.363$ & 0.304 \\
6 & 23.82 & $-11.91$ & 0.263 \\
\hline
\end{tabular}
\end{table}