\begin{table}%t1
\caption{\label{tab:sumtab}Hydrodynamic models of type IIP supernovae.}
\par
%\centering
\small
\begin{tabular}{ l c c c c c c }
\hline\hline
&&&&&& \\[-8pt]
 SN & $R_0$ & $M_{\rm env}$ & $E$ & $M_{{\rm Ni}}$ 
       & $v_{{\rm Ni}}^{\rm max}$ & $v_{{\rm H}}^{\rm min}$ \\
       & $(R_{\odot})$ & $(M_{\odot})$ & ($10^{51}$~erg) & $(10^{-2}~M_{\odot})$
       & \multicolumn{2}{c}{(km~s$^{-1}$)}\\
\hline
 1987A &  35  & 18   & 1.5   & 7.65 &  3000 & 600 \\
1999em & 500  & 19   & 1.3   & 3.60 &  660  & 700 \\
 2003Z & 229  & 14   & 0.245  & 0.63 &  535  & 360 \\
2004et & 1500 & 22.9 & 2.3   & 6.8  &  1000 & 300 \\
2005cs & 600  & 15.9 & 0.41  & 0.82 &  610  & 300 \\
\hline
\end{tabular}
\end{table}