\begin{table}%t2
\caption{\label{tab:molecules}Species and number of detected lines in the 555$-$636~GHz.}\vspace{-2mm}
%\centering
\par
\begin{tabular}{l|c|rrrrr}
\hline \hline 
Species & $E_{\rm up}$ (K) & (1) & (2) & (3) & (4) & (5) \\
\hline
H$_2$O                & 27--680 &   1 &   2 &  1 & 1 &   2\\
HDO                     & 97        &  0 &  1 &  0 &  0 &   1\\
D$_2$O                &  29        &  0 &  1 &  0 &  0 &   0\\
CO                       &  83        &  1 &   1 &  1 &  1 &   1\\
C$^{17}$O             & 83         &  0 &   1 &   1 &  1 &   1\\
HCO$^+$             &  119      & 1 &  1 &  1 &  1 &   1\\
H$^{13}$CO$^+$  & 119        & 0 &   1 &   0 &  0 &   1\\
HCN                     & 119       &  1 &   1 &  1 &  1 &   1\\
H$^{13}$CN           & 119       &  0 &  1 &  1 &  0 &   1\\
DCN                     &  119      &  0 &  1 &  0 &  0 &   1\\
HNC                     & 119       &  0 &   1 &  1 &  0 &   1\\
CN                        & 82        &  0 &   0 &  2 &  2 &   2\\
N$_2$H$^+$        & 95         & 0 &   1 &  1 &  0 &   1\\
NH$_3$                & 28         &  1 &   1 &  1 &  1 &   1\\
HCl                       & 27         &   0 &   1 &  1 &  1 &   1\\
H$^{37}$Cl            & 27         &   0 &   1 &  1 &  0 &   1\\
CCH                     & 117       &  0 &   0 &  2 &  0 &   2\\
H$_2$CO              & 120--530& 4 &   8  &  8 &  0 & 8\\
CH$_3$OH            & 39--1050 & 17 &  35  & 47 & 3 & 345\\
$^{13}$CH$_3$OH & 39--240   &  0 &  0 &  0 & 0 & 41\\ 
CH$_3$OCH$_3$   & 115--290 &   0 &   0 &  1 &  0 & 30\\
H$_2$S                  & 160--415 &  0 & 2 &  0 &  0 &   4\\
CS                        & 186 &  1 &   1 &  1 &  1 &   1\\
C$^{34}$S              & 175--200 &  0 &   2 &  0 &  0 &   2\\
SO                        & 190--225  & 0 &   6 &  0 &  2 &   6\\
SO$_2$                 & 80--210    & 0 &   10 &  0 &  0 &   15\\
\hline 
others$^c$            &  & 0 &  0 &  0 &  0 & 62 \\
\hline
Total                    &  & 27 & 86 & 71 & 16 & 558\\
\hline
\end{tabular}
\tablefoot {Second column gives the upper level energy range of the detected transitions. Columns~(1) to~(5) refer to L1157-B1, IRAS~16293, OMC2-FIR4, AFGL~2591 and NGC~6334I respectively. In L1157-B1 the number refers to the list of lines reported in Codella et~al. (\cite{Code10}).}
\vspace*{-4mm}
\end{table}