\begin{table}%t4
\caption{Observed and predicted ("low $T_{\rm k}$'' and "high $T_{\rm k}$'' LVG~models) line area ratios for Henize~2-10 and NGC~253.}\label{tab:rap}
%\begin{center}
\par
\begin{tabular}{c|cc}
\hline
\hline
 $A$ & NGC~253 & Henize~2-10 \\
(K~km~s$^{-1}$)& observations & observations\\
\hline
  $\frac{^{12}{\rm CO}(3-2)}{^{12}{\rm CO}(6-5)}$ & $1.6\pm0.6^{*}$  & $1.7\pm0.7^{*}$\\
%\hline
  $\frac{^{12}{\rm CO}(3-2)}{^{12}{\rm CO}(7-6)}$ & $3.3\pm1.3^{*}$  & $2.0\pm0.8^{*}$\\ 
%\hline
 $\frac{^{12}{\rm CO}(6-5)}{^{12}{\rm CO}(7-6)}$ & $2.1\pm0.8^{*}$  & $1.2\pm0.5^{*}$\\
%\hline
\hline
 $\frac{^{12}{\rm CO}(1-0)}{^{13}{\rm CO}(1-0)}$ & $11.5\pm2.2^{*}$ & $14.9\pm5.8^{*}$\\
%\hline
 $\frac{^{12}{\rm CO}(2-1)}{^{13}{\rm CO}(2-1)}$ & $13.0\pm3.0^{*}$ & $19.2\pm5.8^{*}$\\
%\hline
 $\frac{^{12}{\rm CO}(3-2)}{^{13}{\rm CO}(3-2)}$ & $9.1\pm3.1^{*}$ & $8.9\pm3.8^{*}$\\
%\hline
\hline
& "Low $T_{\rm k}$''  model & "Low $T_{\rm k}$'' model\\
& $T_{\rm k}=70$~K & $T_{\rm k}=50$~K\\
\hline
 $\frac{^{12}{\rm CO}(3-2)}{^{12}{\rm CO}(6-5)}$ & 1.6  & 2.0\\
%\hline
  $\frac{^{12}{\rm CO}(3-2)}{^{12}{\rm CO}(7-6)}$ & 2.5  & 3.8\\
%\hline
 $\frac{^{12}{\rm CO}(6-5)}{^{12}{\rm CO}(7-6)}$ & 1.5  & 1.9\\
%\hline
\hline
 $\frac{^{12}{\rm CO}(1-0)}{^{13}{\rm CO}(1-0)}$ & 25.5 & 19.1\\
%\hline
 $\frac{^{12}{\rm CO}(2-1)}{^{13}{\rm CO}(2-1)}$ & 13.4 & 9.9\\
%\hline
 $\frac{^{12}{\rm CO}(3-2)}{^{13}{\rm CO}(3-2)}$ & 10.1 & 8.1\\
%\hline
\hline
& "High $T_{\rm k}$'' model & "High $T_{\rm k}$'' model\\
& $T_{\rm k}=150$~K & $T_{\rm k}=100$~K\\
\hline
 $\frac{^{12}{\rm CO}(3-2)}{^{12}{\rm CO}(6-5)}$ & 1.4  & 1.6\\
%\hline
  $\frac{^{12}{\rm CO}(3-2)}{^{12}{\rm CO}(7-6)}$ & 1.8  & 2.5\\
%\hline
 $\frac{^{12}{\rm CO}(6-5)}{^{12}{\rm CO}(7-6)}$ & 1.3  & 1.5\\
%\hline
\hline
 $\frac{^{12}{\rm CO}(1-0)}{^{13}{\rm CO}(1-0)}$ & 15.1 & 23.9\\
%\hline
 $\frac{^{12}{\rm CO}(2-1)}{^{13}{\rm CO}(2-1)}$ & 20.7 & 14.8\\
%\hline
 $\frac{^{12}{\rm CO}(3-2)}{^{13}{\rm CO}(3-2)}$ & 14.8 & 9.9\\
\hline
\end{tabular}
%\end{center}
\par
$^{*}$~Ratio derived from observations marked with asterisks in Tables~\ref{tab:obs1} and~\ref{tab:obs2}.\\ 
\end{table}