\begin{table}%t1
%\centering
\par
\caption{Normalized values of King's parameters computed with four
different membership groups.}\label{tab:solqua}
\small
\begin{tabular}{ccccc}
\hline\hline
                    & $1\sigma$   & $2\sigma$   &$3\sigma$    & $4\sigma$   \\
\hline
$\bar{r}_{\rm c}$         &$0.97\pm0.03$&$1.00\pm0.02$&$1.01\pm0.02$&$1.01\pm0.03$\\
$\bar{r}_{\rm t}$         &$1.05\pm0.01$&$1.00\pm0.01$&$0.98\pm0.01$&$0.97\pm0.01$\\
$\bar{k}$           &$0.64\pm0.02$&$1.02\pm0.03$&$1.11\pm0.02$&$1.24\pm0.03$\\
$\bar{n}_2$         &$0.65\pm0.01$&$1.04\pm0.01$&$1.13\pm0.01$&$1.18\pm0.02$\\
\hline
$\bar{\delta}_{r_{\rm c}}$
&$1.22\pm0.02$&$0.96\pm0.02$&$0.91\pm0.02$&$0.91\pm0.02 $\\
$\bar{\delta}_{r_{\rm t}}$
&$1.32\pm0.04$&$0.99\pm0.03$&$0.90\pm0.03$&$0.80\pm0.03$\\
$\bar{\delta}_{k}$
&$1.22\pm0.04$&$0.94\pm0.03$&$0.90\pm0.02$&$0.94\pm0.03$\\
\hline
$\overline{Q}$
&$1.17\pm0.04$&$1.03\pm0.02$&$1.00\pm0.02$&$0.80\pm0.03$\\
\hline
\end{tabular}
\end{table}