\begin{table}%t7
\caption{\label{table:7}Results of VLA observations at 8.4~GHz.}      
%\centerline
 {          
\begin{tabular}{lccccccc}     
\hline\hline       
Radio continuum &  $S_{\rm p}$ &$S_{\rm int}$ & \multicolumn{3}{c}{Size}  &
Nearest maser & Separation\\
source &              &             &      Major axis  & Minor axis & PA&&\\
       & (mJy~beam$^{-1}$)& (mJy)  & (\arcsec) & (\arcsec) & (\degr) && (\arcsec)\\
\hline
G21.385$-$00.254 & 13.00& 65    &3.8 & 1.8 & $+$50         &G21.407$-$00.254& 76.8\\
G24.148$-$00.009 & 1.05 & 1     &0.6$^*$ & 0.4$^*$ & $+$35 &G24.148$-$00.009& 0.11\\
G26.598$-$00.024 & 4.30 & 42    &3.8 & 2.5 & $-$35         &G26.598$-$00.024& 0.80\\
G28.817$+$00.365 & 0.81 & 0.8   &0.6 & 0.5 & $-$20         &G28.817$+$00.365& 0.08\\
G30.330$+$00.090 & 8.70 & 13    &1.3 & 0.8 & $-$25         &G30.318$+$00.070& 85.6\\
G31.160$+$00.045 & 2.40 & 22    &2.0 & 1.5 & $+$70         &G31.156$+$00.045& 11.9\\
G31.582$+$00.075 & 0.43 & 15    &4.0 & 3.0 & 0             &G31.581$+$00.077& 9.00\\
G36.115$+$00.552 & 0.25 & 0.2   &0.7$^*$ & 0.3$^*$ & $-$45 &G36.115$+$00.552& 0.20\\
\hline 
  \end{tabular} }
\par
  \smallskip                          
{$^*$ Angular size upper limits (see Sect.~3.2).} 
\end{table}