\begin{table}%t7
\caption{\label{t7}Means and standard deviation for Points-model on the
initial discrete points (in mas).}
 %\centering
\par
\begin{tabular}{llllll}
\hline\hline
& Pts-KNP & Pts-GL dr & Pts-GLAD dr & Pts-GL ind. & Pts-GLAD ind. \\ \hline
$\mu (r_{\alpha })$ & $-1.3$ & $-4.5$ & 0.0 & $-2.6$ & 0.6 \\ 
$\sigma (r_{\alpha })$ & 63.40 & 83.63 & 82.41 & 83.64 & 82.47 \\ 
$\mu (r_{\delta })$ & $-2.4$ & $-46.52$ & $-2.4$ & $-46.55$ & 2.0 \\ 
$\sigma (r_{\delta })$ & 69.44 & 86.05 & 69.44 & 85.96 & 86.07 \\
 \hline
\end{tabular}
\end{table}