\begin{table}%t9
\par
\caption {\label{table:10}Parameters derived by fitting kinematics of the rotating
and expanding disc model.  
}     
%\centerline
 {          
\begin{tabular}{lrrccc}     
\hline\hline       
Source & $V_{\rm rot}$ &$V_{\rm exp}$ &$V_{\rm sys}$ & $i$&$\chi_{\rm V}^2$ \\
       & (km~s$^{-1}$)& (km~s$^{-1}$)&(km~s$^{-1}$)& (\degr)& \\
\hline
G23.207$-$00.377 & $-$1.17 &$+$3.96& 79.46& $-$69& 168\\
G23.389$+$00.185 & $-$1.26 &$-$1.71& 74.91& $+$54& 101\\
G23.657$-$00.127 & $+$7.29 &$-$2.61& 81.90& $+$16& 641\\
G24.634$-$00.324 & $+$8.64 &$-$2.25& 38.96& $+$71& 544\\
G25.411$+$00.105 & $+$0.09 &$-$1.17& 95.84& $+$47& 206\\
G26.598$-$00.024 & $+$0.81 &$-$0.81& 24.58& $-$55&  30\\
G31.047$+$00.356 & $+$$4\times 10^{-7}$ & $-$2.43& 80.68& $-$61& 211\\
G33.980$-$00.019 & $-$0.45 &$+$2.97& 61.86& $-$62& 123\\
G34.751$-$00.093 & $-$1.17 &$-$2.88& 51.17& $+$53&  22\\
\hline                                   
\end{tabular}    }
\par
\smallskip
The signs $+$ and $-$ of the rotation and expansion
velocities refer to the clockwise or anti-clockwise rotation and 
outflow or inflow for positive i.  Both rotation and flow 
are reversed in a case of negative~$i$. 
For each source, both signs together with the sign of~$i$ could be reversed
since our model does not give the directions unambiguously.                                                                            
\end{table}