\begin{table}%t1
\caption{\label{tab-obs}HIFI observations of $\chi$ Cyg.}
%\centerline
{\small
\begin{tabular}{llrrr}
\hline \hline\noalign{\smallskip}
  Molecule  &  Transition & $\nu$ (GHz) & $E_{\rm up}$ (K)& $I$\tablefootmark{a}
(K km s$^{-1}$) \\
\hline 
CO        &  $J=6$--5           &  691.473 & 116 & 15.3   \\
CO        &  $J=10$--9          & 1151.985 & 304 & 13.6 \\
CO        &  $J=16$--15         & 1841.346 & 752 & 13.5 \\
o-H$_{2}$O & 1$_{10} {-} 1_{01}$ & 556.936  &  61 & 3.0   \\
p-H$_{2}$O & 2$_{11} {-} 2_{02}$ & 752.033  & 137 &  4.2   \\
p-H$_{2}$O & 2$_{02} {-} 1_{11}$ & 987.927  & 101 & 7.3   \\
p-H$_{2}$O & 1$_{11} {-} 0_{00}$ & 1113.343 &  53 & 8.0   \\
o-H$_{2}$O & 3$_{12} {-} 2_{21}$ & 1153.127 & 249 & 7.5   \\
o-H$_{2}$O & 3$_{21} {-} 3_{12}$ & 1162.912 & 305 & 1.5   \\
o-H$_{2}$O & 3$_{03} {-} 2_{12}$ & 1716.770 & 197 & 18.1   \\
\hline
\end{tabular}}
\tablefoot{\tablefoottext{a}{The absolute calibration accuracy is between 10\% to 30\% (see text).}}
\end{table}