\begin{table}%tb1[htbp]
  %\centering
\par
    \caption{Parameters for the 1D Riemann problems.} \label{tab:1dtests}
    %\renewcommand{\arraystretch}{1.25}
    \begin{tabular}{llrrrrrrrrrr} 
    \hline \hline
      No. & Initial state & $\rho$ & $p$ & $v_x$ & $v_y$ & $v_z$ & $B_y$ &
      $B_z$ & $B_x$ & $\gamma$ & $t_{\rm final}$ \\ \hline 
      1 & left & 1.0 & 1.0 & 0.0 & 0.0 & 0.0 & 1.0 & 0.0 & 0.5 & 2.0 & 0.4 \\
      & right & 0.125 & 0.1 & 0.0 & 0.0 & 0.0 & $-$1.0 & 0.0 & 0.5 &
      2.0 & 0.4 \\ \hline
      2 & left & 1.0 & 30.0 & 0.0 & 0.0 & 0.0 & 6.0 & 6.0 & 5.0 & 5/3
      & 0.4 \\
       & right& 1.0 & 1.0 & 0.0 & 0.0 & 0.0 & 0.7 & 0.7 & 5.0 &5/3 & 0.4
      \\ \hline
      3 & left & 1.0 & 1000.0 & 0.0 & 0.0 & 0.0 & 7.0 & 7.0 & 10.0
      & 5/3 & 0.4
      \\
       & right & 1.0 & 0.1 & 0.0 & 0.0 & 0.0 & 0.7 & 0.7 & 10.0 &
      5/3 & 0.4 \\ \hline
      4 & left & 1.0 & 0.1 & 0.999 & 0.0 & 0.0 & 7.0 & 7.0 & 10.0 &
      5/3 & 0.4
      \\
       & right & 1.0 & 0.1 & $-$0.999 & 0.0 & 0.0 & $-$7.0 & $-$7.0 & 10.0 &
      5/3 & 0.4 \\ \hline
      5 & left & 1.08 & 0.95 & 0.4 & 0.3 & 0.2 & 0.3 & 0.3 & 2.0 & 5/3 &
      0.55 \\
       & right & 1.0 & 1.0 & $-$0.45 & $-$0.2 & 0.2 & -0.7 & 0.5 & 2.0 &
      5/3 & 0.55 \\ \hline
    \end{tabular}
\end{table}