\begin{table}%t1 \caption{\label{tab:obs}Observation parameters. The projection center of all the data displayed in this paper is: $\alpha_{2000} = {\rm 01^h55^m12.26^s}$, $\delta_{2000} = 87\deg41'56.30''$.} \small%\centerline { \begin{tabular}{cccccccccc} \hline \hline Molecule & Transition & Frequency & Instrument & Config. & Beam & PA & Vel. Resol. & Int. Time & Noise \\ & & GHz & & & arcsec & $\deg$ & \kms{} & hours & K \\ \hline &&&&&&&&& \\[-8pt] \twCO{} & \Jone{} & 115.271195 & PdBI & C\&D & $ 4.4 \times 4.2$ & 80 & 0.1 & 65.2/180$^{a}$ & 0.23$^{b}$ \\ & & 115.271195 & 30m & --- & 21.3 & 0 & 0.1 & ---/--- & 0.40 \\ \thCO{} & \Jone{} & 110.201354 & 30m & --- & 22.3 & 0 & 0.1 & ---/--- & 0.19 \\ \hline \end{tabular}} \medskip $^{a}$ Two values are given for the integration time: the 5~antennae array equivalent on-source time and the telescope time. \\ $^{b}$ The noise value quoted here is the noise at the mosaic phase center. \end{table}