\begin{table}%T5
%\centering
\par
\caption{Standard deviation of $U$, $V$,
$W$ for the $361$ SPY thin-disk
white dwarfs, $\sigma_{U}$, $\sigma_{V}$, and $\sigma_{W}$
from \citet{soubiran03} are shown for comparison. \label{uvw_duetab}}
\begin{tabular}{lccc}
\hline\hline
  &$\sigma_{U}$ & $\sigma_{V}$ & $\sigma_{W}$\\
  &${\rm km~s^{-1}}$ & ${\rm km~s^{-1}}$ & ${\rm km~s^{-1}}$\\
\hline
Thin-disk WDs &      &      &    \\
(our sample)        & $34$ & $24$ & $18$\\
%\hline
Thin-disk stars &             &      &\\
(Soubiran et al.)& $39$ & $20$ & $20$\\
\hline
\end{tabular}
\end{table}