\begin{table}%t3
\caption{CPU time per numerical cell and iteration for Tadmor's
central scheme and Marquina's flux formula for the
different regimes considered in the text, using third order schemes for
the cell reconstruction and time update.} \label{TCI}
%\centering
\par
\begin{tabular}{cccc}
\hline  \hline
 \multicolumn{2}{c}{} & \multicolumn{2}{c}{TCI ($\mu$s)}\\
\hline
 Case & \# Zones & Marquina & Tadmor \\
 \hline
  1D & 400 $\times$ 1 $\times$ 1    & 17.0 & 8.0 \\
  1.5D  & 400 $\times$ 1 $\times$ 1 & 32.4 & 8.8 \\
  2D & 120 $\times$ 40 $\times$ 1   & 72.1 & 22.7 \\
  \hline
\end{tabular}
\end{table}