\begin{table}%t1
%\centering
\par
  \caption{\label{t:CO}Observation parameters. The projection center of all the data 
    is: $\alpha_{2000} = 05^{\rm h}16^{\rm m}18.15^{\rm s}$, $\delta_{2000} = 34\deg18'44.3''$.}
      \begin{tabular}{rcrlcccrclccr}
        \hline \hline
        Molecule & Transition & Frequency  & Instrument & \# Pix. & $F_{\rm eff}$ & $B_{\rm eff}$ & Resol.
& Resol. & Int. Time & $T_{\rm sys}$ & Noise & Obs. date \\
                 &            & GHz        &            &         &         &         & arcsec
& \kms{} & hours           &    K    &  mK   &   \\
        \hline
        \twCO{} & \Jone{} & 115.271202 & 30~m/AB100 & 2       & 0.95 & 0.74 & 22 & 0.20 & 0.7
& 240 & 20 & 13 Feb. 2004 \\
        \twCO{} & \Jtwo{} & 230.538000 & 30~m/HERA  & 9 & 0.91 & 0.52 & 11 & 0.40 & 0.7
& 300 & 10 & 11--13 Feb. 2004 \\
%         \twCO{} & \Jtwo{} & 230.538000 & 30m/AB230  & 2 & 0.91 & 0.52 & 11 & 0.40 & 0.7
% & 260 & 16 & 13 Feb. 2004 \\
        \hline
      \end{tabular} 
\end{table}