\begin{table}%T3
\caption{\label{rad}Mean meatallicity values of M~3 variables within smaller and larger radial
distances. }
%\centering
\par
\begin{tabular}{ccccccc}
\hline\hline
\noalign{\smallskip}
 &$\langle{\rm [Fe/H]}_{\rm spect}\rangle$ & $\sigma$ & $N$ &
$\langle{\rm [Fe/H]}_{\rm
phot}\rangle$& $\sigma$ & $N$ \\
\noalign{\smallskip}
\hline
 \noalign{\smallskip}
 $R<2\farcm 5$ &  $ -1.08$ &0.23& 3  &$-1.11$&0.01& 2\\
 $R<3\farcm 5$ &  $ -1.13$ &0.18& 8  &$-1.24$&0.14& 5\\
 $R>3\farcm 5$ &  $ -1.28$ &0.22& 20 &$-1.36$&0.13& 14  \\
 all&             $ -1.24$ &0.22& 28 &$-1.33$&0.14& 19 \\
\noalign{\smallskip}
\hline
\end{tabular}
\end{table}