\begin{table}%tb1
	\caption{\label{tab:intens}Modelled integrated intensities and resulting abundances.}
		%\footnotesize
	 %%\centerline

{
	\begin{tabular}{c  c c c   c c c   c c c}
	\hline 
	\hline\noalign{\smallskip}
		       &						  &	 Observed   &             &						  &	 Best fit   &        &   H$_{2}$    & C$^{18}$O  & C$^{18}$O \\
	Position & $I_{(1-0)}$ & $I_{(2-1)}$	& $I_{(3-2)}$ & $I_{(1-0)}$ & $I_{(2-1)}$	& $I_{(3-2)}$& column  &  column & fractional \\
	 & 					&(K~km~s$^{-1}$) & 	  	 & 					&(K~km~s$^{-1}$) &     &  density & density &  abundance\\
	 	       &				&				&			 &			&				&				&		($10^{23}$ cm$^{-2}$)	 &	($10^{15}$ cm$^{-2}$)	&	($\times10^{-8}$)\\
	\hline
	NA  & 9.15	& 10.65	& 6.94 & 9.23 & 10.42 & 7.28 	& 1.60 & 15.4	 & 9.6 \\    
	NB  &	7.47	& 8.87	& 4.76 & 7.44 & 8.15	& 5.20	& 1.39 & 11.9	 & 8.6 \\     
	NC  & 8.14	& 10.35	& 4.90 & 8.13	& 9.29	& 5.57	& 1.00 & 11.9	 & 12.0\\	    
	ND  & 7.90	& 10.09	& 4.82 & 7.99 & 8.88	& 6.20  & 4.01 & 13.5	 & 3.4 \\ 		
	\hline
	SA1  & 4.69	& 10.57	& 8.46 & 4.75 & 9.84	& 9.01	& 1.84 & 6.4	  & 5.8\\	     
	SA2  & 2.42	& 1.98	&	0.50 & 2.50 & 2.02	& 0.64	& 		 & 4.2		& 	 \\		
	SB1  & 4.63	& 6.66	& 4.20 & 4.74 & 6.72  & 4.37 	&	2.46 & 6.0	  & 4.2\\       
	SB2  & 3.32	& 5.99	& 4.31 & 3.35 & 5.73  & 4.50 	&      & 4.4		&		 \\	
	SC1  & 4.61	& 7.37	& 3.87 & 4.72 & 6.82  & 4.37  & 3.87 & 5.8		&	1.9\\       
	SC2  & 1.17	& 2.58	& 1.45 & 1.21 & 2.23  & 1.71 	&	     & 1.4		& 	 \\
	SD1  & 4.81	& 7.44	& 7.31 & 5.01 & 8.53  & 7.34 	& 4.82 & 7.3		&	2.7\\       
	SD2  & 4.41	& 8.66	& 4.66 & 4.45 & 7.42  & 5.74  &    	 & 5.8		& 	 \\
	\hline
	\end{tabular}
	}\medskip
	Positions of the NW sub-cluster are identified as
            starting with N, while the south positions start with S.  For the
            positions in the SE, the labels~1 and 2 identify the lower (LVC) and
            higher velocity (HVC) components respectively. Where
            there are two velocity component lines,  the C$^{18}$O fractional 
            abundance was calculated using 
            the total column density of 
            C$^{18}$O, summing both components 
	\end{table}