\begin{table}%t1
\caption{Observed transitions.}\label{tobs}
%\begin{center}
{
\begin{tabular}{ccccc}
\hline \hline
 Molecular  & Frequency & $HPBW$ & $\Delta v^{\dagger}$ & Bandwidth$^{\dagger}$ \\
 transition  & (GHz) & (\asec ) & (\kms ) & (\kms ) \\
\hline
CS (2--1)  & 97.980 & 51 & $0.13/2.12$ & $130/3053$ \\
CS (3--2)  & 146.969 & 34 & $0.087/1.43$ & $87/2059$ \\
CS (5--4)  & 244.935 & 21 & $0.052/0.86$ & $52/1238$ \\
\CIII\ (1--0) & 112.359 & 45 & $0.11/1.85$ &  $110/2664$\\
\CIII\ (2--1) & 224.714 & 22 & $0.057/0.93$ & $57/1342$ \\
\hline\\[-2mm]
\end{tabular}}
\parbox{10cm}{
$^{\dagger}$ The two values refer to the two spectrometers used. }
%\end{center}
\end{table}