\begin{table}%t1
%\centering
\par
\caption{Values of the fraction $\xi_{1}(\Lambda=0)/\xi_{1}(\Lambda \neq 0)$ for different values of the ratio $\zeta_{\rm c}$ and the polytropic index. The horizontal lines represents the non well defined radius.\label{tab1}}
\begin{tabular}{ccccccc}\hline \hline 
$\zeta_{\rm c}$         &$n=1$       &$n=3/2$     &$n=2$         & $n=3$         & $n=4$        & $n=5$ \\ \hline
$0.1$               &$\sim$$ 0.88$ &--          &--            &  --           & --           &--    \\
$0.005$             &$\sim $$1$    &$\sim$$ 1$    &$\sim $$0.98$   & $\sim$$ 0.86$   & --           &--   \\
$2\times 10^{-4}$   &$\sim $$1$    &$\sim $$1$    &$\sim $$1$      & $\sim$$ 1$      & $\sim$$ 0.88$  &--        \\
$1.2\times 10^{-5}$ & $\sim $$1$   &$\sim $$1$    &$\sim $$1$      & $\sim$$ 1$      & $\sim$$ 1$     &--          \\ 
$6.1\times 10^{-7}$ & $\sim $$1$   &$\sim $$1$    &$\sim $$1$      & $\sim $$1$      & $\sim $$1$     & $\infty$         \\
\hline
\end{tabular}
\end{table}