\begin{table}%t2
\caption{\label{transitions}Observed frequencies and targeted molecules at the four different settings.}
\small%\centerline
 {
\begin{tabular}{l c c c c c c c c c c c }         
\hline\hline\\[-3mm]                  
Frequency&Frequency&Transition$^{a}$&$E_{\rm u}$ (K)&rms (mK) &\multicolumn{4}{c}{Integrated intensity [uncertainty] (K km s$^{-1}$)}\\      
range (GHz)&(GHz)&&&&IRAS 03254&B1-b&L1489 IRS&SVS 4-5\\
\hline      
CH$_3$OH\\
1) 96.739--96.756&96.739 (E$^-$)&2$_{1 2 }$ -- 1$_{ 1 1 }$ &20.0&11--15&0.11 [0.03]&1.65 [0.22]&0.10 [0.03]&1.47  [0.33]\\
&96.741 (A$^+$)&2$_{ 0 2 }$-- 1$_{ 0 1 }$ &14.4&&0.16 [0.04]&2.18 [0.21]&0.17 [0.05]&2.72 [0.58]\\
&96.745 (E$^+$)&2$_{ 0 2 }$-- 1$_{ 0 1 }$ &27.5&&0.017 [0.017]&0.37 [0.20]&0.024 [0.024]&0.64 [0.39]\\
&96.756 (E$^+$)&2$_{ 1 1 }$ -- 1$_{ 1 0 }$ &35.4&&$<$0.01&0.09 [0.26]&$<$0.024 &0.074 [0.030]\\
2) 251.360--251.811&251.738 (A$^{\rm \pm}$)&6$_{ 3 3 }$ -- 6$_{ 2 4 }$ &98.6&28--40&$<$0.033&--&$<$0.079&$<$0.26\\
\hline
HNCO\\
3) 109.872--109.938&109.906&5$_{ 0 5 }$ -- 4$_{ 0 4 }$&15.4&15--23&0.038 [0.030]&--&$<$0.027&0.22 [0.07]\\
4) 131.885--131.886&131.886&6$_{ 0 6 }$ -- 5$_{ 0 5 }$&18.6&19--29&$<$0.021&0.43 [0.06]&$<$0.037&0.22 [0.07]\\ 
\hline                                    
\end{tabular}}
\medskip
$^{a}$ The quantum numbers for the pure rotational transitions of CH$_3$OH and HNCO are $J_{\rm K_aK_c}$ and $J_{\rm K_{-1}K_{+1}}$, respectively.
\end{table}