\begin{table}%t8
\caption{\label{tab8}Comparison of abundances in \object{NGC~6210}.}
\small%\centerline
 {
\begin{tabular}{lrrrrr}
\hline
\hline
&&&&& \\[-8pt]
Elem.  & Present & L$^{\dagger}$  & HKB$^{\dagger}$ & KH$^{\dagger}$ &  Solar$^{\dagger}$  \\ 
\hline  
He & 0.092  & 0.098 & 0.11 & 0.11 &   0.086   \\
C(--4)  & 1.2 & 1.1 &      & 0.94  &   2.5  \\
N(--5)  & 7.0  & 7.4  & 11.4 & 14.5 & 6.1   \\
O(--4)  & 4.9 & 4.4 & 5.2 &  4.4    &  4.6  \\
Ne(--4) & 1.2 & 1.0 & 1.3  & 0.71  & 1.2   \\
S(--6)  & 7.4 & 6.5 & 6.8   &     &  13.8   \\   
Ar(--6) & 2.3 &  1.3   & 1.8  &   &   3.2 \\
Cl(--7) & 1.4 &  1.25 & 1.4   &     & 3.2   \\
Si(--5) & 0.34  &     &    &    & 3.25    \\
Fe(--7) & 6.0   & 9.5  &     &   & 284  \\
P(--7)  & 1.0   &     &     &    & 2.3   \\
K(--8)  & 2.4   &     &     &    & 12   \\
Na(--7) & 7.5   &     &     &    & 14.7 \\
Mg(--5) &      & 2.0    &     &    & 3.4  \\
\hline  
\end{tabular}}
\medskip
$^{\dagger}$ References: L: Liu et~al. (\cite{liu}); HKB: Henry et~al. (\cite{henry}); K: Kwitter \& Henry (\cite{kwitter});  Solar: Asplund et~al. (\cite{asplund}); except Ne and Ar (see Pottasch \& \mbox{Bernard-Salas} \cite{pbs}).
\end{table}