\begin{table}%t3
\caption{\label{tab:lines}Predicted line fluxes for different models, compared with the observed fluxes.}\vspace*{-2mm}
\par
%\centering
\par
\begin{tabular}{lcccc}
\hline \hline \noalign{\smallskip}
                                     & Model \#1   & Model \#2  & Model \#3 & Observed \\
   gas/dust                   & 1                  & 100              & 33             & -- \\ 
   $f_{\rm PAH}$         & 0.01            & 0.0055         & 0.0087     & -- \\
   $f_{\rm UV}$            & 0.005          & 0.0                & 0.0             &  --  \\
    \hline \noalign{\smallskip}
    Line             &\multicolumn{4}{c}{Line Fluxes $\rm[10^{-18}~W/m^2]$} \\
    \hline
    [OI] 63.2~\mic         & 154        & 71.6       & 71.6       & 71.7 \\
\par
    [OI] 145.5 ~\mic      & 5.17       & 10.1       & 7.01       & $<$10.4 \\
\par
    [CII] 157.7~\mic      & 4.58       & 0.04      & 0.06      & $<$6.4 \\
o-\water~179.5~\mic & 5.66      & 5.15       & 1.76       & $<$8.8 \\  
\hline   \noalign{\smallskip}                                 
    $^{12}$CO 2 $\rightarrow$ 1             
                            & 0.060     & 0.092     & 0.093     & 0.093 \\
    $^{13}$CO 2 $\rightarrow$ 1             
                            & 0.011     & 0.059     & 0.048     & 0.048 \\
    $^{12}$CO$/^{13}$CO                    
                            & 5.69       & 1.55       & 1.92       & 1.94  \\
  \hline
  \end{tabular}\vspace*{-2mm}
\tablefoot {The best fit is obtained by model~\#3. All models in this table have turbulent line broadening $v_{\rm turb}$~=~0.15~km~s$^{-1}$.}\vspace*{-4mm}
\end{table}