\begin{table}%t2
 \caption{Disc mass in FUor models: column density $\Sigma$ at~1 and 10~{\AU} from
      the star, cumulated disc mass~$\Mdisk$ within~10 and~100~\AU, and
      radius $\Rsg$ at which the disc's vertical gravity field equals that of
      the star.  Masses are lower values and radii $\Rsg$ upper values, 
      obtained with a high viscosity parameter $\alpha = 0.1$.}
   \label{tab:mass-fit}
   %\centering
\par
   \begin{tabular}{lccccc}
      \hline\hline
                & \multicolumn{2}{c}{$\Sigma$ ($10^3~\kg~\meter^{-2}$)}
                                         & \multicolumn{2}{c}{${{\Mdisk} (\Msun)}$} & $\Rsg$ (\AU)\\
                & 1~\AU     &  10~\AU  & 10~\AU & 100~\AU    &      \\
      \hline
      FU~Ori    &     21     &    \z4    & 0.020& 0.54           & 29\\
      V1057~Cyg &     15     &    \z3    & 0.015& 0.32           & 50\\
      V1515~Cyg &     10     &    \z2    & 0.010& 0.24           & 61\\
      Z~CMa~B   &     11     &    \z2    & 0.012& 0.31           & 40\\
      \hline
   \end{tabular}
\end{table}