\begin{table}%t3
%\centering
\par
\caption{Comparison of zero-points of our DENIS magnitudes, with those of other
samples ("Mathewson'' and "2MASS'').\label{reg}}
\begin{tabular}{llrrr}
\hline\hline
$X$-axis       & $Y$-axis      & $\langle X-Y \rangle$ &  $\sigma$ & $n$          \\
\hline
Math. $I  $  & DENIS $I_{\rm d}$ & $ 0.018$              &  $0.144$     & $     599$ \\
Math. $I  $  & DENIS $I_{\rm t}$ & $ 0.085$              &  $0.142$     & $     605$ \\
Math. $I  $  & DENIS $I_{\rm k}$ & $ 0.023$              &  $0.143$     & $     606$ \\
Math. $I  $  & DENIS $I_{\rm s}$ & $ 0.143$              &  $0.185$     & $     542$ \\
2MASS $J  $  & DENIS $J_{\rm d}$ & $ 0.031$              &  $0.242$     & $48 \ 442$ \\
2MASS $J  $  & DENIS $J_{\rm t}$ & $ 0.089$              &  $0.218$     & $49 \ 140$ \\
2MASS $J  $  & DENIS $J_{\rm k}$ & $ 0.023$              &  $0.210$     & $48 \ 439$ \\
2MASS $J  $  & DENIS $J_{\rm s}$ & $-0.210$              &  $0.214$     & $38 \ 199$ \\
2MASS $K  $  & DENIS $K_{\rm d}$ & $ 0.039$              &  $0.402$     & $23 \ 538$ \\
2MASS $K  $  & DENIS $K_{\rm t}$ & $ 0.091$              &  $0.379$     & $21 \ 499$ \\
2MASS $K  $  & DENIS $K_{\rm k}$ & $-0.069$              &  $0.350$     & $21 \ 943$ \\
2MASS $K  $  & DENIS $K_{\rm s}$ & $-0.096$              &  $0.362$     & $10 \ 300$ \\
\hline
2MASS $J  $  & DENIS $J_{\rm d}$ & $ 0.031$              &  $0.242$     & $48 \ 442$ \\
2MASS $J  $  & DENIS $J_{\rm t}$ & $ 0.089$              &  $0.218$     & $49 \ 140$ \\
2MASS $J  $  & DENIS $J_{\rm k}$ & $ 0.023$              &  $0.210$     & $48 \ 439$ \\
2MASS $J  $  & DENIS $J_{\rm s}$ & $-0.210$              &  $0.214$     & $38 \ 199$ \\
\hline
\end{tabular}
\end{table}