\begin{table}%t1
  \caption{Simulation parameters.}\label{t:parameters}
\small%\centerline
 {
    \begin{tabular}{lccccccc}
      \hline
      \hline
      Run & $L_x \times L_y \times L_z$
          & $N_x \times N_y \times N_z$
          & $\beta$ & $\langle B_z \rangle$ &
          $\varOmega$ & $q$ & $\Delta t$ \\
      \hline
      R2D\_256       & $0.0\times24.0\times12.0$ &
          $1\times128\times256$ &  $1.0$ & $0.0$ &
          1.0 & 0  & 100\\
      R2D\_512       & $0.0\times24.0\times12.0$ &
          $1\times256\times512$ &  $1.0$ & $0.0$ &
          1.0 & 0  & 100\\
      R2D\_256\_Lz24 & $0.0\times24.0\times24.0$ &
          $1\times256\times512$ &  $1.0$ & $0.0$ &
          1.0 & 0  & 100\\
      R3D\_256       & $12.0\times24.0\times12.0$ &
          $128\times128\times256$ &  $1.0$ & $0.0$ &
          1.0 & 0  & 30\\
      S3D\_256       & $12.0\times24.0\times12.0$ &
          $128\times256\times128$ &  $1.0$ & $0.0$ &
          1.0 & 3/2 & 30\\
      S3D\_512       & $12.0\times24.0\times12.0$ &
          $256\times512\times256$ &  $1.0$ & $0.0$ &
          1.0 & 3/2 & 20\\
      S3D\_256\_b3   & $12.0\times24.0\times12.0$ &
          $128\times256\times128$ &  $3.0$ & $0.0$ &
          1.0 & 3/2 & 30\\
      S3D\_256\_Lz18 & $12.0\times24.0\times18.0$ &
          $128\times256\times192$ &  $1.0$ & $0.0$ &
          1.0 & 3/2 & 20\\
      S3D\_256\_Bz0.03 & $12.0\times24.0\times18.0$ &
          $128\times256\times192$ &  $1.0$ & $0.03$ &
          1.0 & 3/2 & 20\\
      \hline
    \end{tabular}}
  \medskip
  The first column gives the name of the simulation, while the box size, in
  units of the thermal scale height $H=c_{\rm s} \Omega^{-1}$, and the grid
  resolution are given in the following two columns. The parameters given in
  the last five columns are: the ratio of thermal to magnetic pressure~$\beta$
  in the initial azimuthal field, the mean imposed vertical field~$\langle
  B_z\rangle$ in units of the midplane azimuthal field, the angular frequency~$\Omega$ of the
  box, the shear parameter~$q$, and finally the simulation time in orbits.
\end{table}