\begin{table}%t1
%\centering
\par
\caption {\label{tab_observation}Summary of the HIFI observations used and basic results.}
\scriptsize
\begin{tabular}{lrcl|rrrrr|rrrrr}
\hline\hline
\multicolumn{1}{c}{Transition} &
\multicolumn{1}{c}{$\nu_{\rm line}$\hspace*{0.0cm}} &
\multicolumn{1}{c}{\hspace*{-0.1cm}HPBW }&
\multicolumn{1}{c|}{Mode$^1$} &
\multicolumn{5}{c|}{S140-IRS1}&
\multicolumn{5}{c}{S140-IF}\\
\cline{5-9}
\cline{10-14}
&&&&$t_{\rm source}$ & rms$^2$ &   $\int T{\rm d}v$\hspace*{0.2cm}& $v_{\rm lsr}$ \hspace*{0.2cm}&
$\Delta v$\hspace*{0.3cm} &$t_{\rm source}$ & rms$^2$ &   $\int T{\rm d}v$ \hspace*{0.2cm}&
$v_{\rm lsr}$ \hspace*{0.2cm}&  $\Delta v$\hspace*{0.3cm}  \\
& $[$GHz$ $]\hspace*{0.0cm} & \arcsec & & $[$s$]$ & $[$K$]$ & (K~km s$^{-1}$) & (km s$^{-1}$) & (km s$^{-1}$) & $[$s$]$ & $[$K$]$ & (K~km s$^{-1}$) & (km s$^{-1}$) & (km s$^{-1}$) \\
\hline
CII{} & 1900.537 & 12 &  OTF & 12 & 0.9  &  59.63 (0.99) &  --7.26 (0.05)
& 6.82 (0.15) & 12 &0.9 & 96.91 (0.60) &  --8.00 (9.2e-03) & 3.05 (0.02)  \\
$^{13}$CO(5--4) & 550.926  & 43 & FSW & 480 & 0.02 & 85.74 (2.48) &  --7.24 (0.06) & 4.02 (0.14) & 240 & 0.03 & 4.56 (0.04) & --7.89 (0.01) & 2.85 (0.03)  \\
C$^{18}$O(5--4) & 548.831  & 43 & FSW & 480 & 0.02 & 17.29 (0.07)  & --7.24 (5.7e-03) & 2.98 (0.01) & 240 & 0.03 & 0.47 (0.03) & --7.66 (0.08) & 2.21 (0.17)  \\
HCO$^+$(6--5) & 535.062 & 43 &  FSW & 480 & 0.02 & 38.96 (4.90) &  --6.77 (0.23) &  3.75 (0.57) & 240 & 0.16 & 0.67 (0.28) &  --7.52 (0.74) &  3.48 (1.63)  \\
C$^{18}$O(9--8) & 987.56 & 23 & FSW & 66 &  0.1 & 2.60 (0.07) &  --7.03
(0.04) &2.92 (0.09) &\ldots&\ldots&\ldots&\ldots&\ldots \\
$^{13}$CO(10--9)&1101.35 & 20 & FSW & 156 &0.15 & 23.41 (0.73)& --6.99
(0.06) &  3.93 (0.15)&\ldots&\ldots&\ldots&\ldots&\ldots \\
\hline
\end{tabular}
\tablefoot {\tablefoottext{1}{ OTF = On-The-Fly, FSW = frequency-switch, OFF position =
22$^{\rm h}$18$^{\rm m}$37.01$^{\rm s}$, 63$^\circ$14$\arcmin$17.9$\arcsec$}. 
\tablefoottext{2}{At a velocity resolution of $\Delta v=0.7$~km~s$^{-1}$.}}
\end{table}