\begin{table}%t1
\par
\caption{\label{tabla-teo}Theoretical abundances in the standard model.}
%\centering
\par
\begin{tabular}{lc}
\hline \hline\noalign{\smallskip}
Nucleus & Our results \\ 
\hline 
D& $2.565 \times 10^{-5}$ \\[-1mm]
 $^4$He & $0.2468$ \\ 
\hline
\end{tabular}
\end{table}