\begin{table}%t1
\caption{\label{tableone}Observing parameters of the molecular line 
	data. Parameters include: the transition frequency ($\nu$), the
	Half Power Beam Width ($HPBW$), the main beam efficiency
	($\eta_{{\rm mb}}$), the average system temperature ($T_{{\rm sys}}$) and the
	average rms noise temperature per channel ($\Delta T_{{\rm rms}}$).}
 %\centering
\par
\begin{tabular}{@{}llllll} 
\hline 
\hline
	& $\nu$
	& $HPBW$
	& $\eta_{{\rm mb}}$
	& $T_{{\rm sys}}$
	& $\Delta T_{{\rm rms}}$ \\
\hline
	& [GHz]
	& [\arcsec]
	&
	& [K]
	& [K] \\
\hline 
	SEST 1994 \\
	\mbox{$^{13}$CO(2--1)} 	
	& 220.399 
	& 25 
	& 0.5 
	& 1250  
	& 0.7 \\  
	SEST 1999  \\ 
	\mbox{$^{12}$CO(2--1)} 	
	& 230.537 
	& 24 
	& 0.5 
	& 460    
	& 0.4 \\
	\mbox{CS(5--4)} 	
	& 244.935 
	& 21 
	& 0.5 
	& 607    
	& 0.4 \\
	\mbox{CS(3--2)} 	
	& 146.969 
	& 34 
	& 0.66 
	& 293   
	& 0.2 \\
	\mbox{CS(2--1)} 	
	&  97.980 
	& 52 
	& 0.75 
	& 293   
	& 0.2 \\
\hline 
\end{tabular}  
\end{table}