\begin{table}%t1
   %\centering
\par
      \caption{Best parameter sets for the non self-gravitating disc.\label{tab:best_nsg}}
\par
{
              $$ 
         \begin{array}{ccccccc}
            \hline\hline
            \noalign{\smallskip}
	    {\rm set} & \Mbh [\Msun] & \rs [{\rm cm}] & \Mdot [\Leddcd]
	    & \rsg [\rs] & \Sigma [{\rm g / cm^2}]^{{a}} 
	    & H [{\rm cm}]^{{b}} \\
            \noalign{\smallskip}
            \hline
            \noalign{\smallskip}
	    1 & 10^7     & 3.0 \times 10^{12} & 10^{2.75} & 2000 
	    & 2.4 \times 10^6 & 1.2 \times 10^{15} \\
	    2 & 10^{6.8} & 1.9 \times 10^{12} & 1000              & 3000 
	    & 2.6 \times 10^6 & 1.3 \times 10^{15} \\
            \noalign{\smallskip}
            \hline
         \end{array}
     $$ }
% 10^{2.75} (= 562)
% (\rsg) 
\begin{list}{}{}
\item[$^{{a}}$] Half surface density $\Sigma$ at $r = \rsg$.
\item[$^{{b}}$] Semi thickness $H$ at $r = \rsg$.
\end{list}
   \end{table}