\begin{table}%t6
%\centering
\par
 \caption{Parameters of the C-shock models that best fit the SiO and CH$_3$OH 
observational data shown in Figs.~\ref{plot4} and~\ref{plot5}.} \label{tab4}
\small\begin{tabular}{cccccccccc}     % 10 columns 
\hline\hline       
$v_{\rm s}$ & $n$(H$_2$) & $B_0$ & $\Delta$ & $T_{\rm n,max}$ & $z_{\rm n}$ & $z_{\rm i}$ & 
$z_{\rm T}$ & $a_{\rm T}$ & $z_{\rm n}/z_{\rm i}$ \\ 
(km~s$^{-1}$) & (cm$^{-3}$) & ($\mu$G) & (pc) & (K) & (cm) & (cm) & (cm) &
(K$^{1/6}$~cm$^{-1}$) & \\
\hline     
30 & 10$^5$ & 450 & 0.0036 & 2000 & $2.1 \times 10^{15}$ &
$5.0\times10^{14}$ & $8.0\times10^{14}$ & $2.0\times10^{-15}$ &
4.2 \\
60 & 10$^5$ & 450 & 0.0072 & 6000 & $4.1\times10^{15}$ &
$1.0\times10^{15}$ & $1.1\times10^{15}$ & $1.8\times10^{-15}$ &
4.0 \\ \hline
\end{tabular}
\end{table}