\begin{table}%t3
\caption{\label{tab:comp}Comparison of the model parameters that gave the best agreement 
     with the observations of HH30. } 
     \small%\centering
\par
  \begin{tabular}{ccc}
   \hline \hline
    Parameter  & Simplified & Detailed  \\
    \hline\noalign{\smallskip}  
    $n_0$ (cm$^{-3}$)      & $2\times 10^4$ & $5\times 10^4$    \\
    $B_0$ ($\mu$G)         &  300  &  500   \\
    $u_0$ (km~s$^{-1}$)   &   50  &  55    \\
    $U_0$ (km~s$^{-1}$)   &  100  &  100   \\
    $f_{\rm i}$(\%)       &  0.1  &  0.1   \\
    $T_0$(K)              &  1000 &  1000  \\
    \hline
  \end{tabular}
  \vspace*{2mm}
\end{table}