\begin{table}%t4
\caption{\label{tab4}Current SNIa rate and SNII rate in SNum for the three models. Observed values by Mannucci et~al. (\cite{Mann08}).}
%\centering
\small
\begin{tabular}{ccc}
\hline
\hline
Model & SNIa rate [SNuM] & SNII rate [SNuM] \\
\hline
1 & 0.060 & 0.028 \\
2 & 0.046 & 0.000 \\
3 & 0.673 & 0.767 \\
\hline
&& \\[-8pt]
Mannucci et~al. (\cite{Mann08}) & $\rm 0.058^{+0.019}_{-0.015}$ & ${<}0.017$ \\[2pt]
\hline
\end{tabular}
\end{table}