\begin{table}%t6
%\centering
\par
\caption{\label{tab-one-comp-model}
Results of the escape probability analysis using the four observed line ratios
$^{12}$CO 3--2/2--1, $^{12}$CO 2--1/1--0, $^{12}$CO/$^{13}$CO 1--0, and 2--1.
% (cf. Fig.~\ref{fig-one-comp-model}).
% $N$(CO)$/\Delta$v is given in $10^{16}$~cm$^{-2}$/km~s$^{-1}$.
$N$(CO) is the total CO column density per $80''$ beam.  $M$ is the total mass integrated over
the beam and assuming an abundance ratio of [CO]/[H$_2$]~=~$8.5\times 10^{-5}$ \citep{frerking1982}. 
$n_{\rm av}$ is the average density assuming that emission stems from a sphere with beam diameter.
 }
\begin{tabular}{crrrrrrr}
\noalign{\smallskip} \hline \hline \noalign{\smallskip}
  $\Delta\alpha/\Delta\delta$ & $\chi_{\rm min}^2$ & 
  $n_{\rm loc}$ & $T_{\rm kin}$ & $N$(CO)$/\Delta v$ & 
  $N$(CO) & $M$ & $n_{\rm av}$ \\
 $['',~'']$ & & 
  [cm$^{-3}$] & [K] & [$10^{16}$~cm$^{-2}$/km~s$^{-1}$] &
 [$10^{16}$~cm$^{-2}$] & [$10^6~$\msun] & [cm$^{-3}$] \\
\noalign{\smallskip} \hline \noalign{\smallskip}
 {\bf M~83:} \\
% output created with runwcofitm83.sh 
% on /projects/sources/galaxies/pap/progs : %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  % m83_ep-model.tex created by wcofit.f
  % x,y,chimin, n,Tkin,Nco/dv, N(CO),Msun,nav
 ($  0$, $  0$) &    1.7 &    3000. &   15.0 &    3.2 &  15.79 &  65.16 &   0.42   \\
 ($-80$, $-72$) &    3.5 &    3000. &   12.5 &    3.2 &   7.58 &  31.29 &   0.20   \\
 ($ 89$, $ 38$) &    2.1 &    3000. &   12.5 &    3.2 &   6.69 &  27.60 &   0.18   \\
% end of output. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\hline
 {\bf M~51:} \\
% output created by runwcofitm51.sh: %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  % m51_ep-model.tex created by wcofit.f
  % x,y,chimin, n,Tkin,Nco/dv, N(CO),Msun,nav
 ($  0$, $  0$) &    3.6 &   30000. &    12.5 &     3.2 &   17.41 &  484.67 &    0.18   \\
 ($ 72$, $ 84$) &    4.0 &    3000. &    15.0 &     3.2 &    2.07 &   57.76 &    0.02   \\
 ($-84$, $-84$) &    7.4 &   10000. &    12.5 &     3.2 &    5.46 &  151.89 &    0.06   \\
\hline 
\end{tabular}
\end{table}