\begin{table}%t2
\caption{\label{perfo2dim}Values of $\chi^2$ test obtained for each pair of datasets used as the input to the neuronal~net.}
%%\centering

\par
\begin{tabular}{cccccc}
\hline \hline\noalign{\smallskip}
Sample1 & Sample2 & $ \chi^2 $ \\
\hline 
NEA(64) & OC(103)   & {\bf 91.26} \\
NEA(64) & MB(66)     & 48.67 \\
NEA(64) & OC-LL(29)  & {\bf 32.71} \\
NEA(64) & OC-L(48)   & 68.84\\
NEA(64) & OC-H(26)  & 61.65\\
\hline
\end{tabular}
\end{table}