\begin{table}%t1
      \caption{\label{physics}Physical properties of the NACRE models.}
    %\centerline
{
           \begin{tabular}{c c c c c c c c}
            \hline\hline
            \noalign{\smallskip}
$M$  &  $t$(H)$^a$  &$ M_{{\rm c},{\rm H}}^b $& $t$(He)$^a$ &  $M_{\rm c,He}^c$  & $M_{\rm 1dup}^d$  & 
$M_{\rm 2dup}^e$    & $\delta(M_{\rm 2dup})^f$ \\
                        \hline
                        3.0 & 276 & 0.72 & 56  & 0.28 & 0.85 & 0.78 & 0.01     \\
            3.5 & 195 & 0.93 & 33  & 0.32 & 1.19 & 0.84 & 0.05     \\
            4.0 & 145 & 1.04 & 23  & 0.36 & 1.50 & 0.87 & 0.15     \\
            4.5 & 112 & 1.21 & 16  & 0.44 & 1.86 & 0.90 & 0.26     \\
            5.0 & 90  & 1.40 & 12  & 0.48 & 2.10 & 0.93 & 0.37     \\
            5.5 & 75  & 1.57 & 10  & 0.57 & 2.42 & 0.97 & 0.48     \\
            6.0 & 63  & 1.85 & 7.6 & 0.62 & 2.70 & 1.00 & 0.58     \\
            6.5 & 54  & 2.05 & 6.3 & 0.70 & 2.85 & 1.05 & 0.68     \\
\hline
         \end{tabular}}
         \smallskip
$^{{a}}$  Times are expressed in~Myr.\\
$^{{b}}$  Maximum extension (in $M_{\odot}$) 
of the convective core during \mbox{H-burning}.\\
$^{{c}}$  Maximum extension (in $M_{\odot}$) 
of the convective core during \mbox{He-burning}.\\
$^{{d}}$  Mass coordinate (in $M_{\odot}$) 
of the innermost layer reached during the first dredge-up.\\
$^{{e}}$  Mass coordinate (in $M_{\odot}$) of 
the innermost layer reached during the second dredge-up.\\
$^{{f}}$  Amount (in $M_{\odot}$) of  
dredged-up material nuclearly processed by CNO~burning.
   \end{table}