\begin{table}%T1
%\centering
\par
\caption{Line frequencies and average beam sizes (HPBW).\label{tabbeam}}
\begin{tabular}{llrccc}
\hline\hline
Line & Transition & Freq. & \multicolumn{3}{c}{IRAM   CSO  KPNO}\\
     & & [GHz] & [\arcsec] & [\arcsec] &[\arcsec] \\
\hline
HCN$^*$	 	& $1-0$			&  88.632 & 26.6 &  --  &    \\
CH$_3$OH	& $3_0-2_0E$		& 145.094 & 17.0 &  --  & 41 \\
CH$_3$OH	& $3_{-1}-2_{-1}E$	& 145.097 & 17.0 &  --  & 41 \\
CH$_3$OH	& $3_0-2_0A^+$		& 145.103 & 17.0 &  --  & 41 \\
CH$_3$OH	& $3_2-2_2E$		& 145.126 & 17.0 &  --  & 41 \\
HC$_3$N		& $16-15$		& 145.561 & 16.8 &  --  &    \\
OCS		& $12-11$		& 145.947 & 16.8 &  --  &    \\
CS		& $3-2$			& 146.969 & 16.6 &  --  & 40 \\
CH$_3$CN	& $8_3-7_3$		& 147.149 & 16.6 &  --  & 40 \\
CH$_3$CN	& $8_2-7_2$		& 147.163 & 16.6 &  --  & 40 \\
CH$_3$CN	& $8_1-7_1$		& 147.172 & 16.6 &  --  & 40 \\
CH$_3$CN	& $8_0-7_0$		& 147.175 & 16.6 &  --  & 40 \\
H$_2$CO		& $2_{11}-1_{10}$	& 150.498 &      &  --  & 39 \\
CH$_3$OH	& $7_0-7_{-1} E$	& 156.828 & 15.4 &  --  & 38 \\
CH$_3$OH	& $6_0-6_{-1} E$	& 157.049 & 15.4 &  --  & 38 \\
CH$_3$OH	& $5_0-5_{-1} E$	& 157.179 & 15.4 &  --  & 38 \\
CH$_3$OH	& $4_0-4_{-1} E$	& 157.246 & 15.4 &  --  & 38 \\
CH$_3$OH	& $3_0-3_{-1} E$	& 157.270 & 15.4 &  --  & 38 \\
CH$_3$OH	& $1_0-1_{-1} E$	& 157.272 & 15.4 &  --  & 38 \\
CH$_3$OH	& $2_0-2_{-1} E$	& 157.276 & 15.4 &  --  & 38 \\
H$_2$S		& $1_{10}-1_{01}$	& 168.763 & 14.4 &  --  & 35 \\
HNCO		& $10_{0,10}-9_{0,9}$	& 219.798 & 11.0 &      &    \\
SO		& $N_J=6_5-5_4$		& 219.949 & 11.0 &      &    \\
HCOOH		& $10_{0,10}-9_{0,9}$	& 220.038 & 11.0 &      &    \\
CH$_3$OH	& $8_0-7_1 E$		& 220.078 & 11.0 &      &    \\
H$_2$CO		& $3_{12}-2_{11}$	& 225.697 & 10.9 & 31   &    \\
CO		& $2-1$			& 230.538 & 10.7 & 30.5 &    \\
CH$_3$OH	& $5_0-4_0 E$		& 241.700 & 10.2 & 29   &    \\
CH$_3$OH	& $5_{-1}-4_{-1} E$ 	& 241.767 & 10.2 & 29   &    \\
CH$_3$OH	& $5_0-4_0 A^+$		& 241.791 & 10.2 & 29   &    \\
CH$_3$OH	& $5_1-4_1 E$		& 241.879 & 10.2 & 29   &    \\
CH$_3$OH	& $5_2-4_2 A^+$		& 241.888 & 10.2 & 29   &    \\
CH$_3$OH	& $5_2-4_E $		& 241.905 & 10.2 & 29   &    \\
CS		& $5-4$			& 244.936 & 10.0 & 28.5 &    \\
CH$_3$OH	& $9_3-9_2 A^{-+}$	& 251.360 &  9.8 & 28   &    \\
CH$_3$OH	& $8_3-8_2 A^{-+}$	& 251.517 &  9.8 & 28   &    \\
CH$_3$OH	& $7_3-7_2 A^{-+}$	& 251.642 &  9.8 & 28   &    \\
CH$_3$OH	& $6_3-6_2 A^{-+}$	& 251.738 &  9.8 & 28   &    \\
CH$_3$OH	& $5_3-5_2 A^{-+}$	& 251.812 &  9.8 & 28   &    \\
SO		& $N_J=5_6-4_5$		& 251.826 &  9.8 & 28   &    \\
CH$_3$OH	& $4_3-4_2 A^{-+}$	& 251.867 &  9.8 & 28   &    \\
CH$_3$OH	& $5_3-5_2 A^{+-}$	& 251.891 &  9.8 & 28   &    \\
CH$_3$OH	& $6_3-6_2 A^{+-}$	& 251.896 &  9.8 & 28   &    \\
CH$_3$OH	& $4_3-4_2 A^{+-}$	& 251.900 &  9.8 & 28   &    \\
CH$_3$OH	& $3_3-3_2 A^{-+}$	& 251.906 &  9.8 & 28   &    \\
CH$_3$OH	& $3_3-3_2 A^{+-}$	& 251.917 &  9.8 & 28   &    \\
CH$_3$OH	& $7_3-7_2 A^{+-}$	& 251.924 &  9.8 & 28   &    \\
CH$_3$OH	& $8_3-8_2 A^{+-}$	& 251.985 &  9.8 & 28   &    \\
CH$_3$OH	& $9_3-9_2 A^{+-}$	& 252.090 &  9.8 & 28   &    \\
CH$_3$OH	& $10_3-10_2 A^{+-}$	& 252.253 &  9.8 & 28   &    \\
NS		& $11/2-9/2 e$		& 253.571 &  9.7 &      &    \\
NS		& $11/2-9/2 f$		& 253.969 &  9.7 &      &    \\
CH$_3$OH	& $2_0-1_{-1} E$	& 254.015 &  9.7 &      &    \\
HC$_3$N		& $28-27$		& 254.700 &      & 27.5 &    \\
HCN$^*$		& $3-2$			& 265.886 &  9.4 & 26.5 & 22.5  \\
HNC		& $3-2$			& 271.981 &  9.3 & 25.9 & -- \\
\hline
CH$_3$OH	& $2_1-2_0 A^{-+}$	& 304.208 &  --  & 23.0  & -- \\
CH$_3$OH	& $4_1-4_0 A^{-+}$	& 307.166 &  --  & 22.8  & -- \\
CS		& $7-6$			& 342.883 &  --  & 20.6  & -- \\
CO		& $3-2$			& 345.796 &  --  & 20.4  & -- \\
H$_2$CO		& $5_{15}-4_{14}$	& 351.769 &  --  & 20.0  & -- \\
HCN		& $4-3$			& 354.505 &  --  & 19.8  & -- \\
HDO		& $1_{10}-1_{01}$	& 509.292 &  --  & 14.0  & -- \\
\hline
\end{tabular}
\par
\smallskip
Notes: frequencies are from \cite{Mul05} (2005) or \cite{Pic98} (1998) (see text).\\
"--'' Means that this telescope is not equiped to observe this line.\\
$^*$ The SEST beam sizes at 89 and 266~GHz are 54\arcsec\  and 18.5\arcsec\ 
respectively.\\
\end{table}