\begin{table}%T2
%\centering
\par
\caption{22~GHz line parameters for previously known masers.}\label{t2}
\begin{tabular}{l c c c c c c c}
\hline
\hline
Source ($l,b$)&&$\Delta V$&$V_{\rm c}$&$V_{\rm p}$&&$S_{\rm p}$&$S_{\rm i}$ \\
\cline{3-5} &&\multicolumn{3}{c}{(km~s$^{-1}$)} && (Jy) & (Jy~km~s$^{-1}$)  \\
\hline
 20.08$-$0.14 &&  15.6 &  24.7  &  23.6  &&   18.8  &  46.4 \\
 21.87$+$0.01 &&   4.4 &  22.3  &  23.2  &&    7.0  &  12.6 \\
 22.35$+$0.06 &&       &        &  88.3  &&    3.6  &   3.1 \\
 23.01$-$0.41 &&  26.0 &  79.5  &  77.0  &&  206.0  & 534.6 \\
 23.44$-$0.18 &&       &        &  96.4  &&   11.0  &  12.2 \\
 24.79$+$0.09 &&  94.0 &  80.0  & 112.3  &&  413.0  & 1575.2 \\
 27.28$+$0.15 &&       &        &  31.2  &&    6.7  &   5.2 \\
 29.95$-$0.02 &&  30.8 &  95.4  &  99.3  &&   27.6  & 148.1 \\
 30.59$-$0.04 &&  72.0 &   9.0  &  21.3  &&    1.0  &   3.6 \\
 30.76$-$0.05 &&  27.0 &  80.5  &  87.1  &&    1.0  &   5.2 \\
 30.82$-$0.05 &&  71.0 &  93.5  & 101.4  &&  169.0  & 250.2 \\
 33.13$-$0.09 &&       &        &  68.7  &&    1.6  &   2.0 \\
 37.55$+$0.19 &&       &        &  89.1  &&    1.0  &   1.5 \\
\hline
\end{tabular}
\end{table}