\begin{table}%t1
\caption{\label{table:1}Summary of HIFI observations of comet \garradd{} and retrieved water
production rates.}
\par
%\centering
\par
\begin{tabular}{c c c c c c c c c r@{}l c}
  \hline\hline  \noalign{\smallskip}
  Obs.\ ID & UT start date & $\Delta$ & $r_{\rm h}$ & Band &
    Obs.\ mode & $\nu_{ij}$ & Integration & Intensity & 
  \multicolumn{2}{c}{Velocity shift} & $Q_\water{}$ \\
   & [mm/dd.ddd] & [AU] & [AU] & & & [GHz] & [s] & [K \kms] & 
  \multicolumn{2}{c}{[\ms]} & [$10^{28}~{\rm s}^{-1}$] \\
  \hline
1342180461 & 07/20.908 & 1.865 & 1.831 & 1a & FSw & 557 & 2181 & $1.594 \pm 0.009$ &             $+56~\pm~$ & 3 & $2.73 \pm 0.01$ \\
1342180462 & 07/20.933 & 1.865 & 1.831 & 1a & PSw & 557 & 381 & $1.717 \pm 0.023$ &             $+55~\pm~$ & 10 & $2.81 \pm 0.03$ \\
1342180463 & 07/20.936 & 1.865 & 1.831 & 1a & OTF & 557 & 2725 & & & & \\
1342180557 & 07/22.338 & 1.901 & 1.836 & 4b & FSw & 1113 & 2802 & $1.206 \pm 0.022$ &             $+24~\pm~$ & 13 & $1.82 \pm 0.03$ \\
1342180813 & 07/27.726 & 2.037 & 1.850 & 6b & FSw & 1669 & 3018 & $1.597 \pm 0.104$ &             $+283~\pm~$ & 28 & $2.12 \pm 0.30$ \\
1342180815 & 07/27.782 & 2.039 & 1.850 & 4b & FSw & 1113 & 2802 & $0.994 \pm 0.023$ &             $+42~\pm~$ & 15 & $1.70 \pm 0.03$ \\
 \hline
\end{tabular}
\tablefoot {The observations were conducted using standard frequency switching (FSw), position switching (PSw) and on-the-fly spectral maps (OTF) observing modes.  The error bars in line intensity, velocity shift and production rate are the statistical errors.}
\end{table}