\begin{table}%t5
%\centering
\par
\caption{\label{tab-ratios}
Line ratios of integrated intensities in K~km~s$^{-1}$. 
The $1\sigma$ errors are $\sim$$21\%$. 
The CO 3--2/1--0 ratio was added to allow an easier comparison with the literature.
%
To compare all data at a common resolution of~$80''$, we scaled the \CI\ and $^{13}$CO data, for which maps 
are not available, using the beam filling factors $\Phi_{\rm B}^{80/10}$ and $\Phi_{\rm B}^{80/21}$.
The factor $\Phi_{\rm B}^{80/10}$ for \CI\ and $^{13}$CO 2--1 data was derived from the ratio of $^{12}$CO 2--1 integrated 
intensities at $80''$ and at $10''$ resolution. Likeweise, the factor $\Phi_{\rm B}^{80/21}$ for $^{13}$CO 1--0 data was
derived from CO 1--0.
}
\begin{tabular}{cccccccccccccccc}
\hline \hline
%% include M~83 file below: %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%! m83_ratios_kkms.tex created by m83_specplot_allinone.class (for M~83) 21-APR-2005 14:35:13 
%! Kkm/sec on Tmb, ci3co corrected for beam filling  
 {$\Delta\alpha,\Delta\delta$} & $\Phi_{\rm B}^{80/10}$ & $\Phi_{\rm B}^{80/21}$ & CO 3--2 & & CO 3--2 & & CO 2--1 & & CO 1--0 & & CO 2--1 & & \CI\ 1--0 & & \CI\ 1--0\\ 
 \cline{4-4} \cline{6-6} \cline{8-8} \cline{10-10} \cline{12-12} \cline{14-14} \cline{16-16} 
{$['',~'']$} & & & CO 1--0 & & CO 2--1 & & CO 1--0 & & $^{13}$CO 1--0 & & $^{13}$CO 2--1 & & $^{13}$CO 2--1 & & CO 3--2\\ 
\hline 
{\bf M~83:} \\  
 (0, 0)   & 0.22  & 0.28  & 0.6  & & 0.64  & & 0.93  & & 9.34  & & 10.02  & & 3.73  & & 0.58  \\  
 (--80, --72)   & 0.37  & 0.45  & 0.46  & & 0.46  & & 0.99  & & 8.77  & & 9.58  & & 1.48  & & 0.34  \\  
 (89, 38)   & 0.48  & 0.47  & 0.46  & & 0.49  & & 0.93  & & 8.46  & & 10.14  & & 1.38  & & 0.28  \\  
\hline 
%% include file above. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% include M~51 file below: %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%! m51_ratios_kkms.tex created by m51_specplot_allinone.class 13-JAN-2005  18:27:39 
%! Kkm/sec on Tmb (13co and ci data corrected for 80as beam filling)    
% {$\Delta\alpha,\Delta\delta$} & $\Phi_B^{80/10}$ & $\Phi_B^{80/21}$ & CO 3-2 & & CO 3-2 & & CO 2-1 & & CO 1-0 & & CO 2-1 & & \CI\ 1-0 & & \CI\ 1-0\\  
% & & & \cline{2-2} \cline{4-4} \cline{6-6} \cline{8-8} \cline{10-10} \cline{12-12} \cline{14-14}  
% {$['','']$} & & & CO 1-0 & & CO 2-1 & & CO 1-0 & & $^{13}$CO 1-0 & & $^{13}$CO 2-1 & & $^{13}$CO 2-1 & & CO 3-2\\  
% \hline  
{\bf M~51:} \\   
 (0, 0)    & 0.56  & 0.68  & 0.55  & & 0.76  & & 0.73  & & 8.31  & & 4.62  & & 1.4  & & 0.4  \\  
 (72, 84)    & 0.62  & 0.73  & 0.6  & & 0.76  & & 0.8  & & 9.27  & & 13.81  & & 3.19  & & 0.3  \\  
 (--84, --84)    & 0.52  & 0.72  & 0.43  & & 0.75  & & 0.57  & & 6.04  & & 6.09  & & 1.25  & & 0.27  \\  
\hline  
%% include file above. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\end{tabular}
\end{table}