\begin{table}%t3
\caption{\label{tab3}Radii, depth, and mass of the convective core, radius at the bottom of the outer convective zone, mass of the outer convective zone, initial and present surface chemical composition for  stellar models satisfying the observational constraints for $\iota$~Hor.}
\small%\centering
\par
\begin{tabular}{cccccccccc}\hline
\hline
Model & $R_{\star}$ (cm) & $r_{\rm cc}/R_{\star}$ & $M_{\rm cc}$/$M_{\star}$ & $r_{\rm ec}$/$R_{\star}$ & $M_{\rm ec}$/$M_{\star}$ & $Y_0$ & $Z_0$ & $Y$ & $Z$ \\
\hline
 OM1 & 7.91e10 & --& -- & 0.774 & 0.008 & 0.2787 &0.0220 & 0.2503 & 0.0207 \\
 OM2 & 7.65e10 & 0.036 & 0.0033 & 0.782 & 0.008 & 0.2878 & 0.0260 & 0.2802 & 0.0257 \\
 AC1 & 8.08e10 & -- & -- & 0.767 & 0.008 & 0.2698 &0.0226 & 0.2440 & 0.0210  \\
 AC2 & 7.50e10 & -- & -- & 0.780 & 0.007 & 0.2670 &0.0263 & 0.2735 & 0.0255 \\
 OM3($\alpha=2.2$)& 7.38e10 & 0.0463 & 0.0060 & 0.755 & 0.013 & 0.2970 & 0.0300 & 0.2909 & 0.0296 \\
 OM4 & 7.71e10 & 0.031 & 0.0022 & 0.788 & 0.006 & 0.2820 & 0.0235 & 0.2724 & 0.0230\\
\hline
\end{tabular}
\end{table}