\begin{table}%t2
\caption{Integrated optical depth:  Cen A (NGC 5128).}\label{tab2}
%\centerline
{
\begin{tabular}{lcccc}
\hline  \hline
Line&$\sigma_{l/c}$& Low $v^1$ & High $v$ & Total \\
\hline
&&\kms &\kms & \kms \\
\hline
H I &  0.0022 & 14.03(0.02) & 13.53 (0.02) & 27.43 (0.03)  \\
OH  &  0.0020 & 0.218(0.008) & 0.225(0.013) & 0.463(0.015) \\
\hcop & 0.017 & 15.83(0.18) & 6.34 (0.10) & 22.16 (0.21) \\
\hline
\end{tabular}}
\medskip
$^1$ $v$ $<$ 565 \kms.
\end{table}