\begin{table}%t1
\caption{\label{tab2}Integrated intensities of the observed spectral lines.}
\par
%\centering
\par
\begin{tabular}{c c c}
 \hline\hline \noalign{\smallskip}
 Spectral Line & $I$\tablefootmark{a} & $\it FWHM$ \\
 & (K~km~s$^{-1}$) &(km~s$^{-1}$) \\
\hline\noalign{\smallskip}
$^{12}$CO $J=$ 7--6  & 12.9 $\pm$ 1.9 & 4.2 \\
$^{12}$CO $J=$ 6--5  & 17.7 $\pm$ 0.9 & 4.2 \\
$^{12}$CO $J=$ 3--2  & 4.0 $\pm$ 0.6 & 4.0 \\
$^{13}$CO $J=$ 3--2& 1.3 $\pm$ 0.6\tablefootmark{b} & (...)  \\
CI $J=$ 2--1 &  $<$1.0\tablefootmark{c} & (...)  \\
\hline
\end{tabular}
\tablefoot {\tablefoottext{a}{The line intensity $I = \int{T_{\rm MB}~{\rm d}V}$ is integrated over the velocity range 0$-$10~km~s$^{-1}$;}
\tablefoottext{b}{marginal 2$\sigma$ detection;}
\tablefoottext{c}{upper limit given by the 2$\sigma$~value.}}
\end{table}