\begin{table}%t6
%\centering
\par
\caption{{$uvby$$\beta$} indices obtained for V2109~Cyg and comparison 
stars. The pairs below the star names are the number of points collected 
for each object in {$uvby$} and~$\beta$, respectively. For comparison, 
the values available from the bibliography are listed in the bottom part. 
The values listed for the variable are "mean values'' based on the 
normal points along the cycle (Table~7). For this star, 
the comparison with the earlier available Str\"omgren indices (bottom part) 
must be made at phase~0.15 where the indices are, according to Table~7: 
$V=7\fm438$, $b-y=0\fm214$, $m_1=0\fm171$ and $c_1=0\fm874$.\label{tab6}}
\begin{tabular}{crrrrr}  \hline\hline
Star & $V$~~~ & $b-y$~ & $m_1$~ & $c_1$~ & $\beta$~~ \\ \hline
V2109~Cyg    &7.494 &0.226 &0.172 &0.838 &2.740\\ 
(532, 172)   &   59 &   15 &    1 &   36 &   13\\
C1~=~HD~189013 &6.890 &0.089 &0.171 &1.011 &2.846\\
(475, 62)    &~     &~     &~     &~     &~    \\
C2~=~HD~191022 &7.438 &0.413 &0.192 &0.391 &2.603\\
(252, 37)    &    3 &    3 &    3 &   10 &    7\\
C3~=~HD~193701 &6.981 &0.301 &0.167 &0.503 &2.659\\
(5,5)        &    5 &    3 &    3 &    3 &    5\\
V2109~Cyg    &7.435 &0.202 &0.183 &0.873 &--~~  \\
C1~=~HD~189013 &6.885 &0.089 &0.176 &1.015 &2.843\\
C2~=~HD~191022 &7.444 &0.410 &0.190 &0.382 &2.602\\
C3~=~HD~193701 &6.978 &0.307 &0.162 &0.512 &2.663\\
\hline
\end{tabular}
\end{table}