\begin{table}%t1
\caption{Alfv\'en speed in km~s$^{-1}$ at four locations $(x,y)$ 
for the two initial conditions.
\label{alfvenspeedtable} }
%\centering
\par
\begin{tabular}{c c c c c} 
\hline\hline 
Run & $(-0.16,1)$ & $(0,1.1)$ & $(0,1.2)$ & $(0,1.45)$\\ 
\hline 
A      & 335 & 515 & 220 & 571\\ 
B \& C & 457 & 703 & 30  & 779\\
\hline
\end{tabular}
\end{table}