\begin{table}%t3
\caption{\label{ngc6752}Sulfur abundances for the subgiant stars in \object{NGC~6752}.}
%\centerline
 {
\begin{tabular}{rcrrr}
\hline\hline
Star & $N^a$ & [S/Fe] & [Na/Fe] & [Mg/Fe] \\
\hline
 \object{1406}&3 &+0.19 & +0.02 & $+0.20$ \\
 \object{1665}&2 &+0.54 & +0.10 & $+0.10$ \\
 \object{1461}&2 &+0.58 & +0.29 & $+0.10$ \\
 \object{1481}&2 &+0.57 & +0.54 & $-0.07$ \\
\hline
\end{tabular}}
\par
\medskip
$^a$ Number of S lines used.
\end{table}