\begin{table} %t2
\caption{\label{table:t1}\label{tab2}Segregation of populations\tablefootmark{\dag} for HIPPARCOS and
    GCS samples.}
\small%\centering
\par
\begin{tabular}{lclccccccc} 
\hline \hline \noalign{\smallskip}
Sample & $\#S$ & Pop. & $\sigma_{U}$    &$\sigma_{V}$   &$\sigma_{W}$&  $U$ &  $V$ &  $W$ & $\varepsilon~[^\circ]$  \\\hline 
HIP& 12~516  &t $91.5\%$   &$28.2 \pm 0.2$ & $16.9 \pm 0.2$   &$12.5    \pm 0.1$ &$ -11.2 \pm   0.3$    & $-14.7 \pm 0.2$& $-7.1 \pm 0.1$ & $ 13 \pm 1$\\ 
   & 1003   &T $7.3\%$    &$69.3 \pm 1.3$ &    $37.9   \pm 0.9$ &$42.9 \pm 0.9$ &$ -7.1 \pm 2.2$     & $-60.8 \pm 1.2$ &  $-9.7 \pm 1.4$& $ 4 \pm 2$\\ 
   &  159   &H $1.2\%$ &$179.6 \pm 7.8$& $89.0 \pm 6.3$  &$ 90.8 \pm 6.0$ & $-0.61 \pm 14.2$ &  $-234.9 \pm 7.0 $& $-10.8 \pm 7.2$ & $-6 \pm 3$ \\  
GCS& 12~415 &t $93.8\%$   &$29.7\pm     0.2$&   $17.8\pm 0.2$&  $13.9\pm 0.1$& $ -10.4\pm 0.3$& $-15.2\pm 0.2$& $-7.1\pm        0.1$& $11\pm    1$\\ 
   &   763  &T $5.7\%$    &$65.7\pm     1.5$&   $36.7\pm 1.1$&  $41.5\pm 0.9$& $ -3.4\pm 2.4$  & $-59.3\pm 1.3$&$-7.1\pm 1.5$    & $5\pm 2$ \\ 
   &   62   &H $0.5\%$ & $178.6\pm      12.2$&  $113.7\pm 15.0$& $110.5\pm 14.2$&  $1.6\pm 22.7$& $-230.8\pm    14.4$&  $-16.4\pm 14.0$& $-5\pm 10$\\  
\hline
  \end{tabular}
  \tablefoot{\tablefoottext{\dag}{The velocity dispersions are computed from the 
population sample moments and are obtained by segregating the whole sample 
according to the population distribution moments of Table~\ref{tab1}. } 
} 
\par
\end{table}