\begin{table}%t2
\caption{\label{table-average1}Model residual velocities  averaged on interval $T$~=~50$-$60.}
%\centering
\par
  \begin{tabular}{lccccc}
  \hline \hline \noalign{\smallskip}
   Region  &  $\overline{V_R}$ & $\overline{\sigma_R}$ & $\overline{V_\theta}$ &$\overline{\sigma_\theta}$ &  $\overline{n}$\\
             & km s$^{-1}$  &  km s$^{-1}$ &  km s$^{-1}$&  km s$^{-1}$ &   \\
 \hline
Sagittarius &  8.5& 7.2& 0.1&5.9& 70\\
Carina      &  7.5& 7.6&--2.0&6.6&158\\
Cygnus      &  6.8&10.1& 8.2&6.5&108\\
Local System&  6.8&11.7& 4.8&6.7&112\\
Perseus     &--12.5&11.9&--2.9&6.5& 70\\
\hline
\end{tabular}
\end{table}