\begin{table}%T1
    \caption{Observation parameters.}

      \begin{tabular}{lll}
        \hline\hline
        Phase center & $\alpha_{2000} = \rm 05^h 07^m 49.57^s $ & $ \delta_{2000} = 30^\circ 24' 05.16''$\\
        \hline
      \end{tabular}
      %\centerline
{\small
      \begin{tabular}{ccccccccc}
        \hline
        Molecule \& line & Frequency  & {\it FWHM} Beam & PA     & $\Delta v^{a}$ & rms noise$^{a}$ & Int. time & \multicolumn{1}{c}{Obs. date} & Flux scale  \\
                         & GHz        & arcsec & $\deg$ &        \kms{} &   ~mJy/Beam &           hours & & K/(Jy/Beam) \\
        \hline
        \CeiO{} \Jone{}  & 109.782 & $2.57 \times 1.60$ & 41 & 0.85 & ~7 & ~7.2 & 2002--2003 & 24.7\\
        \thCO{} \Jone{}  & 110.201 & $2.56 \times 1.59$ & 41 & 0.85 & ~7 & ~7.2 & 2002--2003 & 24.7 \\
        \twCO{} \Jone{}  & 115.271 & $2.42 \times 1.55$ & 24 & 0.81 & 10 & ~9.7 & 2003--2004 & 24.5\\
        \twCO{} \Jtwo{}  & 230.538 & $0.89 \times 0.58$ & 23 & 0.41 & 18 & 16.9 & 2002--2004 & 44.5\\
        \hline
      \end{tabular}}
      \smallskip{}
         %\centerline
{\small
      \begin{tabular}{cccccccc}
        \hline
        Continuum $\lambda $& Frequency   & {\it FWHM} Beam & PA     & $\Delta \nu$ & rms noise    & Int. time & \multicolumn{1}{c}{Obs. date} \\
        mm         & GHz         & arcsec & $\deg$ & MHz              &~mJy/Beam &           hours & \\
        \hline
        2.66$^{b}$ & 112.5$^{b}$ & $1.84 \times 1.22$$^{b}$ & 31 & ~580$^{c}$ & 0.24 & 16.9 & 2002--2004 \\
        1.30~      & 230.5~      & $0.87 \times 0.56$ & 22 & 1160$^{c}$ & 0.47 & 16.9 & 2002--2004 \\
        \hline
      \end{tabular}}
\medskip
    $^{a}$ $\Delta v$ and the rms noise refer to the rebinned resolution in 
    the channel maps. The native correlator resolution is 8 times higher.\\
    $^{b}$ Merge of the 2.6 and 2.7\mm{} measurements.\\
    $^{c}$ Total IF bandwidth currently available at PdBI
    (with SSB tuning at 2.6\mm{} and DSB at 1.3\mm{}).
    \label{tab:obs}
    %\vspace*{3mm}
  \end{table}