\begin{table}%T2
%%%%\centering
\par
\caption{$<$$(s+t)/(g+h)$$>$ and the maximum variations in axial ratios.\label{tab2}}
\begin{tabular*}{135mm}% 
{@{\extracolsep{\fill}}ccccccc}\hline\hline
Model & $p$ & $q$ & $\gamma$ & \multicolumn{2}{c}{Maximum variation in axial ratios} & $<$$(s+t)/(g+h)$$>$ \\
 & & & & constant-$\rho_{1}$ surfaces & constant-$\rho$  surfaces &\\\hline
$A$ & 0.9 & 0.7 & 1.5 & 15.6\% & 6.3\% & 0.37\\
    & 0.75 & 0.6 & 1.5 & 25.0\% & 8.3\% & 0.30\\
$B$ & 0.9 & 0.7 & - & 8.5\% & 1.4\% & 0.055\\
   & 0.75 & 0.6 & - & 11.6\% & 1.6\% & 0.046\\\hline
\end{tabular*}
\end{table}