\begin{table}%t2
\caption{\label{sandint2}Mean Galactic disk element abundance distribution~($Z_{{\rm GD}}$).}
\par
%\centering
\par
\begin{tabular}{lcccccccccc}
\hline\hline\noalign{\smallskip}
                 & H & He    & C    & \multicolumn{1}{c}{N} & O    & Ne   &  S     &  Cl    &  Ar  \\
\hline
\noalign{\smallskip}
$Z\ugd$          & 12.00 & 11.04 & 8.89 & 8.39 & 8.65 & 8.01 &  7.04  &  5.32  &  6.46\\
\hline
\end{tabular}
\end{table}