\begin{table}%t2
\par
\caption {\label{tab2}Relative range of acceptable values, around those given in
  Table~\ref{tab1}, of the main parameters
  defining the model disk in
  Gomez's Hamburger.}
%\centerline
 {\begin{tabular}{lcl}
\hline\hline
{\bf Representative parameter}  & {\bf Acceptable range} &  Comments \\ 
\hline
Disk radius & $\times$/$\div$ 1.1 & $R_{\rm out}$ and $R_{\rm m}$  \\
Disk width  & $\times/\div$ 1.1 & $H$  \\
Keplerian velocity & $\times/\div$ 1.1 & $V_{\rm t}$ \\
Temperature     & $\times/\div$ 1.1 & characteristic value   \\
High-$z$ jump   & between 2 and 5 & depends on calibration, possible
exc.\ effects (see A.2) \\
Density  & $\times/\div 1.5 $& characteristic value   \\
Outer disk density & $\times/\div$ 3 & only given by \doce\ data,
possible exc.\ effects (A.2) \\
Turbulent velocity  & $\leq$0.1 \kms\ & local velocity dispersion  \\
$X$(\doce)/$X$(\trece) rel.\ abundance  & $\times/\div 1.5$ &  \\
$X$(\doce)/$X$(C$^{17}$O) rel.\ abundance  & $\times/\div 2$ &  \\
\hline
\end{tabular}}
\end{table}