\begin{table}%t4
\par
\caption{\label{t4}Parameter values for the GLAD, MF, GL and GLD methods and 
means and standard deviations for the residuals (in mas).}
%\centering
\par
\begin{tabular}{llllllllll}
\hline\hline
& $\epsilon _{x}$ & $\epsilon _{y}$ & $\epsilon _{z}$ & $\Delta A$ & $\Delta
D$ & $\mu ({\it res}_{\alpha })$ & $\mu ({\it res}_{\delta })$ & $\sigma ({\it res}_{\alpha })$
& $\sigma ({\it res}_{\delta })$ \\ \hline
GLAD & $-19.1$ & $-15.6$ & 84.7 & $-56.2$ & $-46.0$ & \ 0.0 & \ 0.0 & 82.41 & 85.99
\\ 
MF & $-17.3$ & $-14.3$ & 16.8 & $-$ & $-$ & \ $-2.1$ & $-45.6$ & 83.48 & 86.14 \\ 
GL & $-18.4$ & $-14.8$ & 18.7 & $-$ & $-$ & \ $-3.6$ & $-45.6$ & 83.48 & 86.06 \\ 
GLD & $-19.1$ & $-16.3$ & 18.6 & $-$ & $-46.6$ & $-3.5$ & 0.0 & 83.58 & 85.96 \\ 
\hline
\end{tabular}
\par
\end{table}