\begin{table}%t1 \par \caption {\label{tab1}Selected evolutionary properties of the SAGB models as a function of initial mass $M$ (\msun) and mixing efficiency ($C_t$). } %\centerline {\begin{tabular}{ccccccccc} \hline\hline $M$ & $C_t$ & $r_f$ & $M_f$ & $\Delta t_f$ &\chem{12}C & \chem{16}O & \chem{20}Ne & \chem{23}Na \\ %(\msun) & & (km) & (\msun) & (yr) & & & & \\ \hline 9.0 & $10^3$ & 2906 &0.332 & 7495. & 0.050 & 0.524 & 0.313 & 0.032 \\ 9.5 & $10^3$ & 2895 &0.232 & 10662 & 0.044 & 0.552 & 0.285 & 0.043 \\ %9.5 & $10^3$ & &0.220 & 14650 & 0.032 & 0.547 & 0.295 & 0.048 \\ 9.5 & $10^2$ & 1465 &0.053 & 9549 & 0.030 & 0.526 & 0.326 & 0.035 \\ 9.5 & $10^{\ }$& 782 &0.006 & 8991 & 0.033 & 0.530 & 0.318 & 0.036 \\ 9.5 & $0 $ & 0.0 &0.0 & 13061.& 0.010 & 0.569 & 0.291 & 0.054 \\ 10.0 & $10^3$ & 2678 &0.157 & 10570 & 0.025 & 0.611 & 0.255 & 0.042 \\ 10.5 & $10^3$ & 2425 &0.090 & 10680 & 0.023 & 0.592 & 0.266 & 0.048 \\ 11.0 & $10^3$ & 1843 &0.024 & 9813 & 0.013 & 0.592 & 0.270 & 0.052 \\ \hline \end{tabular}} \par \smallskip The quantities shown are: the radius ($R_f$ in km) and mass coordinate ($M_f$ in \msun) where the convective flame stops, the duration of the convective flame ($\Delta t_f$ in~yr) and the final central abundances of \chem{12}C,\chem{16}O,\chem{20}Ne and \chem{23}Na. \end{table}