\begin{table}%t4 
\caption{The results of the CH$_3$CCH rotational diagram method weighted with
observational errors plus  E, A species uncertainties (case I) and using the
$K=1$ and $K=2$ lines only (case II). Ammonia temperatures are from TW.} 
         \label{methylacetylene}          
 %\centering
      $$
 \hskip0.5cm\begin{array}{lrrrrrrrrr} 
   \hline\hline 
   \noalign{\smallskip} 
                        & {\rm H1a} & & {\rm H2a} & & {\rm H2b} &
			& {\rm N1a}  & & {\rm T1a} \\ 
   \noalign{\smallskip} 
      \hline 
\noalign{\smallskip} 
\mathbf{case~~I} \\ 
\noalign{\smallskip} 
T_{{\rm rot}}~~{\rm [K]}   & 27\pm6  & & 16\pm5 & & 18\pm2  & & 23\pm2  
& & 22\pm7 \\ 
N_{{\rm tot}}~~[10^{12}~{\rm cm^{-2}}]   & 31\pm8  & & 16\pm8 & 
& 21\pm4 & & 27\pm5  & & 8\pm3 \\ 
\noalign{\smallskip} 
\mathbf{case~~II} \\ 
\noalign{\smallskip} 
T_{{\rm rot}}~~{\rm [K]}   & 15\pm4  & & 8\pm2 & & 15\pm2  & &  16\pm3 
& & 10\pm5 \\ 
N_{{\rm tot}}~~[10^{12}~{\rm cm^{-2}}]   & 25\pm2  & & 27\pm5 & &
23\pm1 & & 28\pm2  & & 8\pm1 \\ 
\noalign{\medskip}    
T_{21}^{\rm NH_3}~~{\rm [K]}   &  10 & & 12 & &  14 & & -  & & 10 \\   
    \noalign{\smallskip} 
   \hline 
 \end{array} 
     $$ 
\end{table}