\begin{table}%t3
\caption{\label{resum}Distribution parameters for HIPPARCOS and GCS~samples with radial velocity errors up to 2.5~km~s$^{-1}$ (Samples~I', II', III', and~IV')\tablefootmark{\dag}.} 
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\begin{tabular}{rcccccccccccccccc} 
\hline \hline\noalign{\smallskip} 
Sample & $\sigma_{U}$&$\sigma_{V}$&$\sigma_{W}$ & $\delta~[^\circ]$	&$c_U$	&$c_V$	&$c_W$	&$\gamma_U$	&$\gamma_V$	&$\gamma_W$	 \\\hline
HIP total  &36.2	 $\pm$ 0.6&30.8 $\pm$ 1.0&	18.6 $\pm$ 0.5&7.6 $\pm$ 6.6&9.3	 $\pm$ 4.0	&37.0	 $\pm$ 13.9	&20.7	 $\pm$ 14.8	&0.2	 $\pm$ 0.2	&--4.5	 $\pm$ 0.8	&--0.9	 $\pm$ 0.5 \\
$|{\bf V}|\leq 51$&19.9	 $\pm$ 0.1&13.2	 $\pm$ 0.1&	10.7	 $\pm$ 0.1	&12.3	 $\pm$ 0.8	&--0.4	 $\pm$ 0.1	&0.1	 $\pm$ 0.3	&1.5	 $\pm$ 0.5	&0.3	 $\pm$ 0.0	&0.2	 $\pm$ 0.0	&0.2	 $\pm$ 0.1 \\\hline
GCS total&35.2	 $\pm$ 0.4&	26.1	 $\pm$ 0.6&	18.6	 $\pm$ 0.5 &10.7	 $\pm$ 2.4	&5.5	 $\pm$ 2.8	&22.7	 $\pm$ 9.3	&35.2	 $\pm$ 42.4	&--0.1	 $\pm$ 0.2	&--3.1	 $\pm$ 0.5	&--0.9	 $\pm$ 1.0 \\
$|{\bf V}|\leq 51$&21.5	 $\pm$ 0.1&	14.1	 $\pm$ 0.1&	12.4	 $\pm$ 0.1	&8.7	 $\pm$ 0.6	&--0.7	 $\pm$ 0.1	&0.0	 $\pm$ 0.2	&0.7	 $\pm$ 0.3	&0.2	 $\pm$ 0.0	&0.2	 $\pm$ 0.0	&0.1	 $\pm$ 0.0 \\ \hline
$e\leq 0.3$&29.1  $\pm$  0.2 & 18.1  $\pm$  0.1 & 11.6  $\pm$  0.1	&9.6	 $\pm$ 0.6	&0.2	 $\pm$ 0.2	&0.4	 $\pm$ 0.2	&--0.4	 $\pm$ 0.1	&0.1	 $\pm$ 0.0	&--0.3	 $\pm$ 0.0	&0.0	 $\pm$ 0.0 \\
\hline
\end{tabular}
\tablefoot {\tablefoottext{\dag}{The last sample contains representative thin disc stars, obtained from eccentricities $e\leq 0.3$ and $|z_{\rm max}|\leq 0.5$~kpc. The displayed parameters are dispersions~$\sigma_{U}$, $\sigma_{V}$, $\sigma_{W}$, vertex deviation~$\delta$  on the  $UV$-plane, curtosis~$c_U$, $c_V$, $c_W$, and skewness~$\gamma_U$, $\gamma_V$, $\gamma_W$.}}
\end{table}