\begin{table}%t5
\caption{Parameters derived from the fit by the slab and disk model. The parameters for the CO~bandhead fitting are derived in \cite{COletter04}. Accuracy in the temperature and
  column density estimates is limited by systematic instead of
  statistical errors (see text for a fuller
  discussion).\label{tab_disk_model}}
%\centering
\par
\begin{tabular}{llllllll}
\hline\hline
\multicolumn{1}{c}{Model}&\multicolumn{1}{c}{Species} & \multicolumn{1}{c}{$i$} & \multicolumn{1}{c}{$dv$} &   \multicolumn{1}{c}{$T_{{\rm gas}}$} & \multicolumn{1}{c}{$N$} & \multicolumn{1}{c}{$R_{{\rm min}}$} & \multicolumn{1}{c}{$R_{{\rm max}}$}\\
                       &  & \multicolumn{1}{c}{($\degr$)} & \multicolumn{1}{c}{(km s$^{-1}$)} & \multicolumn{1}{c}{(K)} & \multicolumn{1}{c}{(cm$^{-2}$)}&\multicolumn{1}{c}{(AU)}&\multicolumn{1}{c}{(AU)}\\
\hline
\noalign{\smallskip}
Disk & CO~    & 27    & \phantom{2}5 & 1662 & 3.9 $\times$ 10$^{21}$ & 0.2       &  3.6\\
Slab & H$_2$O & n. a. & 25  & 1580 $\pm$ 510 & (2.9 $\pm$ 0.4) $\times$ 10$^{18}$ & n. a.     & n. a.\\
Disk & H$_2$O & 27    & \phantom{2}5 & 1550 $\pm$ 510 & (2.1 $\pm$ 0.4) $\times$ 10$^{18}$ & 2.0 $\pm$ 1 & 4.0 $\pm$ 1 \\
\hline
 \end{tabular}  
\end{table}