\begin{table}%t3
%\centering
\par
\caption{ Properties of the 1.5~$M_\odot$ model at the moments the
structure plots of Fig.~\ref{fig:structure} were made.  The age is in
Gyr, the helium and carbon-oxygen core masses in $M_\odot$.  The last
two columns give the mass fraction ratio Ne/O in the core, and the
ratio of this number to the initial (ZAMS or ISM) Ne/O ratio.  
\label{tab:structure}}
\begin{tabular}{ccccccc}
 \hline
 \hline
  Model & Age & $M_{\rm He}$  & $M_{\rm CO}$  & (Ne/O)$_{\rm c}$ & (Ne/O)$_{\rm c}$/(Ne/O)$_{\rm in}$ \\
 \hline
 TAMS & 2.5949 & 0.166 & 0.000 & 1.093 &  5.97 \\
 RGB  & 2.8495 & 0.440 & 0.000 & 1.093 &  5.97 \\
 AGB  & 2.9852 & 0.568 & 0.379 & 0.0260 & 0.142 \\
 \hline
\end{tabular}
\end{table}