\begin{table}%t2
\caption{\label{tab2}Observed $^{12}$CO $J=3{-}2$ and $J=2{-}1$ line integrated intensities and full width at half-maximum. Bracketted values are from this work. Calculated values for the $J=3{-}2$ line, based on the SED-fitting disc model.}
%\centering
\par
\begin{tabular}{c c c c c c c}
 \hline\hline\noalign{\smallskip}
Source  & $\int{I_{{\rm CO(3-2)}}{\rm d}V}$ & $\int{I_{{\rm CO(3-2)}}}$~$^{\rm calc}$ & ${\it FWHM}_{{\rm CO(3-2)}}$ & ${\it FWHM}$~$^{\rm calc}_{{\rm CO(3-2)}}$ & $\int{I_{{\rm CO(2-1)}}{\rm d}V}$ & $(\int{I_{{\rm CO(3-2)}}})$/$(\int{I_{{\rm CO(2-1)}}})$   \\
  & (K~km~s$^{-1}$) & (K~km~s$^{-1}$) &(km~s$^{-1}$) & (km~s$^{-1}$) & (K~km~s$^{-1}$) &  \\
\hline
HD~100546    	& [$5.96\pm0.64$] & 9.40 & [4.3] & 5.0 	& --    & --  \\
HD~179218     	& $0.60\pm0.12$ & 0.03 & 7.0 & 9.7 	& [$<$0.11]  & $>$6  \\
V892~Tau  	& [$7.12\pm0.20$]%2.18$\pm$0.65 
                   & -- & [1.6]   & --     & [$8.23\pm1.08$]  & 0.9 \\
AB~Aur    	& $13.67\pm1.6$ & 4.73 & 1.4 & 5.7 	& --  & -- \\
HD~163296    	& $4.30\pm0.10$ & 0.33 & 4.0 & 16.2	& 2.94  & 1.5 \\
HD~169142   	& $1.70\pm0.13$ & 0.31 & 1.6 & 2.3	& 0.91  & 1.9 \\
HD~139614     	& $0.47\pm0.11$ & 0.12 & 2.0 & 6.3	& [$0.30\pm0.09$]  & 1.7 \\
HD~142666     	& $0.72\pm0.14$ & 0.004 & 2.0 & 22.4	& [$0.29\pm0.06$]  & 2.4 \\
HD~135344    	& $0.97\pm0.04$ & 9.84 & 1.8 & 4.4	& -- & -- \\
\hline
\end{tabular}
\end{table}