\begin{table}%t8
\par
\caption{\label{table:8}Parameters of ellipses fitted to the maser spot
distributions.}     
%\centerline
 {      
\begin{tabular}{lccccc}     
\hline\hline       
Source & Centre &\multicolumn{2}{c}{Semi-axes} & PA$^{**}$& $e$\\
       & $\Delta$RA, $\Delta$Dec.$^*$   &$a$  & $b$& &\\
       & (mas, mas) & (mas) & (mas) & (\degr)& \\
\hline
G23.207$-$00.377 &$-$62,    71& 126 & 45  & $-$60 & 0.93 \\
G23.389$+$00.185 &$-$34, $-$75& 95  & 56 & $+$45 & 0.81 \\
G23.657$-$00.127 &$-$69, $-$93& 133 & 128 & $-$10 & 0.38 \\
G24.634$-$00.324 &$-$31,    17& 45  & 15  & $-$45 & 0.94 \\
G25.411$+$00.105 &   61,    46& 103 & 70 & $+$90 & 0.73 \\
G26.598$-$00.024 &  161, $-$73& 192 & 111 & $-$84 & 0.81 \\
G31.047$+$00.356 &$-$30, $-$15& 37  & 18  & $+$47 & 0.87 \\
G33.980$-$00.019 &$-$11, $-$18& 42  & 20  & $+$80 & 0.88 \\
G34.751$-$00.093 &    9, $-$16& 27  & 16  & $-$83 & 0.80 \\
\hline      
    \end{tabular}               }
\par
    \smallskip
 {$^*$ Coordinates relative to the brightest spots 
as listed in Table \ref{table:5}.}             
{$^{**}$ The position angle of semi-major axis
(north to east).}
\par
\end{table}