\begin{table}%t1
\caption{\label{tab:pdbi-info}Observation parameters of the PdBI maps shown in Fig.~\ref{fig:pdbi-maps}.}
%\centerline
 {\tiny
\begin{tabular}{ccrclccccccr}
\hline \hline\noalign{\smallskip}
Molecule  & Transition & Frequency  & Instrument & Config. & Beam   & PA     & Vel. Resol. & Int. Time$^{a}$ & $T_\emr{sys}$ & Noise$^{b,\dagger}$ & \multicolumn{1}{c}{Obs. date} \\
&& GHz &&& arcsec & $\deg$ & \kms{}& hours& K & K & \\
\hline\noalign{\smallskip}
\HthCOp{} & 1--0 & 86.754288 & PdBI & C \& D & $ 6.8 \times 4.7$ & 13 & 0.2 & 6.5 & 150 & 0.10 & 2006-07 \\
HCO & $1_{0,1}~3/2, 2$--$0_{0,0}~1/2,1$  & 86.670760 & PdBI & C \& D & $ 6.7 \times 4.4$ & 16 & 0.2 & 6.5 & 150 & 0.09 & 2006-07 \\
\hline
\end{tabular}}
\medskip
$^{a}$ We observed a 7-field mosaic centered on the IR peak at 
$\alpha_{2000} = 05^{\rm h}40^{\rm m}54.27^{\rm s}$, $\delta_{2000} = -02\deg 28'00''$ (\cite{abe03}) with the following offsets: ($-$5.5$''$, $-$22.0$''$),
(5.5$''$, $-$22.0$''$), (11.0$''$, 0.0$''$),
(0.0$''$, 0.0$''$), ($-$11.0$''$, 0.0$''$),
($-$5.5$''$, 22.0$''$) and (5.5$''$, 22.0$''$).
The total field-of-view  is $80.1''\times 102.1''$ and the half power primary beam is 58.1$''$.
The mosaic was Nyquist sampled in declination at 3.4~mm and
largely oversampled in right ascension. This maximizes the field of view
along the PDR edge while the oversampling in the perpendicular
direction eases the deconvolution. On-source time was computed as if the source was always observed with 6 antennae; $^{b}$~the  noise values refer to the mosaic phase center
(mosaic noise is inhomogeneous due to primary beam correction; it 
steeply increases at the mosaic edges).
\end{table}