\begin{table}%tB.1
    \caption{Eigenfrequencies and growth rates for several modes. The
      values on the left of~"/'' correspond to the simulations and the
      values on the right of~"/'' correspond to the linear analysis.}
    \label{tab:Verif}
  %\centering
\par
    \begin{tabular}{|c|c|c|}
      \hline\hline
      Mode~$m$ & \multicolumn{2}{c|}{Eigenvalue~$\omega$} \\
      \cline{2-3}
      & Rotation speed $\Omega_m$  & Growth rate\\
      & $ m~\Omega_m = Re(\omega)$ & $\gamma=Im(\omega)$ \\
      \hline
      \hline
      2 & 2.731 / 2.692 & 0.992 / 1.016 \\
      5 & 7.140 / 7.040 & 2.318 / 2.447 \\
      10 & 14.200 / 14.244 & 3.181 / 3.681 \\
      \hline
    \end{tabular}
\end{table}