\begin{table}%t2
\caption{\label{tabletwo}Derived parameters for the four components shown
	in Fig.~\ref{figureseven}. The parameters include mean values for the
	 excitation temperature ($\overline{T}_{{\rm ex}}$); the
	 \mbox{$^{13}$CO(2--1)} optical depth
	 ($\overline{\tau}_{^{13}{\rm CO}}$);  and the $^{13}$CO and H$_2$ column
	 densities  ($\overline{N}(^{13}$CO), $\overline{N}({\rm H}_2$), respectively).  Also listed are the corresponding
	 estimates for the LTE mass (M$_{{\rm LTE}}$),  Virial mass (M$_{{\rm vir}}$)
	 and average H$_2$ volume density ($\overline{n}_{H_2})$} 
%\centering
\par
\begin{tabular}{@{}lllllllll} 
\hline 
\hline
	& $\overline{T}_{{\rm ex}}$  
	& $\overline{\tau}_{^{13}{\rm CO}}$ 
	& Area 
	& $\overline{N}(^{13}$CO) 
	& $\overline{N}({\rm H}_2)$ 
	& $M_{{\rm LTE}}$ 
	& $M_{{\rm vir}}$ 
	& $\overline{n}_{{\rm H}_2}$ \\ 
\par
\hline	 
	& (K)		 
	& 
	& (degrees$^2$) 
	& (cm$^{-2}$) 
	& (cm$^{-2}$) 
	& (\Msun) 
	& (\Msun) 
	& (cm$^{-3}$) \\ 
\par
\hline 
 	(a) $-25$ to $-22$~\kms 
	& 30	
	& 0.45	
	& $2.1 \times10^{-3}$	
	& $2.0 \times10^{16}$	
	& $8.4 \times10^{21}$ 
	& 540 
	& 420 
	& $1.5 \times10^{3}$ \\  
	(b) $-21$ to $-19$~\kms 
	& 31	
	& 0.49	
	&  $1.3 \times10^{-3}$	
	& $1.5 \times10^{16}$ 
 	&$6.5 \times10^{21}$ 
	& 260 & 1300 
	& $1.5 \times10^{3}$ \\ 
	(c) $-18$ to $-14$~\kms 
	& 29	
	& 0.27	
	& $1.7 \times10^{-3}$	
	& $1.5 \times10^{16}$ 
 	& $6.5 \times10^{21}$ 
	& 310 & 380 & $1.1 \times10^{3}$ \\ 
	(d) $-13$ to $-10$~\kms 
	& 17	
	& 0.2	
	& $0.5 \times10^{-3}$ 
	& $0.6 \times10^{16}$	
	& $2.7 \times10^{21}$	
	&  40	
	& 540 
	& $0.2 \times10^{3}$ \\ 
\hline 
\end{tabular}  
\end{table}