\begin{table}%t4
\caption{\label{toff}Sources affected by emission at OFF position.}
%\centering
\par
\begin{tabular}{lccc}
\hline \hline \noalign{\smallskip}
Source & Wing & Scans & Corrected lines\\
\hline \noalign{\smallskip}
05358+3543 & B & 2/2 & HCO$^{+}$, C$^{18}$O\\
18223$-$1243 & B (far) & 2/2 & none\\
G24.33+0.1M1 & B & 2/2 & none\\
G24.33+0.1M4 & B & 1/1 & HCO$^{+}$\\
G24.33+0.1M2 & B & 1/2 & none; use good scan\\
G35.39$-$0.3M4 & R & 1/2 & none; use good scan\\
\hline
\end{tabular}
\end{table}