\begin{table}%t5  
\caption{Vertex deviation.} \label{vertex}  
%\centering
\par
\begin{tabular}{cc} 
\hline  \hline 
       $\langle$Age (Gyr)$\rangle$ & $\psi_V$  \\  
\hline 
\multicolumn{2}{l}{All stars} \\ 
\noalign{\medskip} 
0.39 $\pm$ 0.20 & 14.8$\degr$    \\  
1.64 $\pm$ 0.52 & 16.0$\degr$   \\  
3.20 $\pm$ 0.45 & 20.0$\degr$   \\  
5.20 $\pm$ 0.81 & 11.3$\degr$  \\  
9.16 $\pm$ 1.81 & 10.8$\degr$  \\  
\hline 
\multicolumn{2}{l}{Stars with $\vert W\vert\le$ 15 km~s$^{-1}$}\\ 
\noalign{\medskip}  
0.40 $\pm$ 0.20 & 17.5$\degr$  \\ 
1.58 $\pm$ 0.51 & 9.1$\degr$  \\ 
3.28 $\pm$ 0.44 & 18.6$\degr$  \\ 
5.22 $\pm$ 0.88 & 14.5$\degr$  \\ 
8.47 $\pm$ 1.34 & 0.6$\degr$  \\ 
\hline 
\multicolumn{2}{l}{Stars with $e \le$ 0.15 and $\vert W\vert\le$ 15 km~s$^{-1}$}\\ 
\noalign{\medskip}  
0.46 $\pm$ 0.18 & 23.4$\degr$  \\ 
1.57 $\pm$ 0.51 & 14.0$\degr$  \\ 
3.20 $\pm$ 0.45 & 4.9$\degr$  \\ 
5.18 $\pm$ 0.76 & $-$13.3$\degr$  \\ 
9.23 $\pm$ 2.06 & 9.5$\degr$  \\ 
\hline  
\multicolumn{2}{l}{Stars with $\sqrt{u^2+v^2} \le 40$ km~s$^{-1}$ and $\vert W\vert\le$ 15 km~s$^{-1}$}\\ 
\noalign{\medskip} 
0.39 $\pm$ 0.20 & 16.4$\degr$  \\ 
1.45 $\pm$ 0.49 & 19.6$\degr$  \\ 
3.26 $\pm$ 0.45 & $-$1.5$\degr$  \\ 
5.12 $\pm$ 1.68 & $-$9.2$\degr$  \\ 
\hline  
\end{tabular} 
\end{table}