\begin{table} %t7
\caption{Disk sizes from the $^{12}$CO $J\!=\!3\!\rightarrow\!2$ 
integrated intensities.}\label{tab:fitting_parameters}
\par
%\begin{center}
{
\begin{tabular}{llllllll}
\hline
\hline
&\multicolumn{1}{c}{}&\multicolumn{3}{c}{Radius (AU)}&\multicolumn{3}{c}{Disk model}\\
& Literature$^a$& $T_{\rm ex}=25$~K & $T_{\rm ex}=30$~K & $T_{\rm ex}=50$~K & $i$ & $R_{\rm out}^c$ & $T({\rm 1~AU})^b$\\
\hline
\object{LkCa~15}   & 425 & 620 & 559 & 422  & 57 & 290 & 170 \\
\object{LkCa~15}$^d$  & 425 &...&... &... & 57 & 450 & 100 \\
\object{TW~Hya}    & 200 & 238 & 215 & 162  & 3.5& 165 & 140 \\
\object{HD~163296} & 310 & 778 & 701 & 530  & 65 & 680 & 180 \\
\object{MWC~480}   & 695 & 722 & 650 & 492  & 30 & 400 & 170\\
\hline
\end{tabular}}
$^a$ See Table~2 for references. \\
$^b$ Gas temperature at 1~AU. The radius of disk is taken to be 0.01 AU. \\
$^c$ Values adopted in subsequent analysis. \\
$^d$ Alternative fit to LkCa15 data.
\end{table}