\begin{table}%t2
\caption{\label{rms}Noise level in the integrated intensity maps presented in Figs.~\ref{coall} and~\ref{others}.}
\small%\centering
\par
\begin{tabular}{lcr}
\hline\hline
\multicolumn{2}{c}{Transition} &\multicolumn{1}{c}{rms}\\
&&\multicolumn{1}{c}{[Jy~beam$^{-1}$]}\\
\hline
CO(2$-$1)& red-shift., HV  &0.5\\
CO(2$-$1)& red-shift., EHV &1.3 \\
CO(2$-$1)& blue-shift., HV &8.0 \\
CO(2$-$1)& blue-shift., EHV &1.3 \\
CO(6--5)& red-shift.&1035  \\
CO(6--5)& blue-shift.&863  \\
$^{13}$CO(2$-$1)&red-shift.&0.3\\
$^{13}$CO(2$-$1)&blue-shift.&1.0\\
C$^{18}$O(2$-$1)&red-shift.&0.4\\
C$^{18}$O(2$-$1)&blue-shift.&0.7\\
SO($5_6{-}4_5$)&red-shift.&0.4\\
SO($5_6{-}4_5$)&blue-shift.&2.0\\
\hline
\end{tabular}
\end{table}