\begin{table}%t3
%\centering
\par
\caption {\label{mdot}Typical  viscous timescales  (in  years), dissipated  kinetic
         energies  (in  erg/s),  and  accretion rates  (in  
         $M_{\odot}$~yr$^{-1}$) when  the laminar  or the turbulent  viscosity are
         used.}
\begin{tabular}{cccccc}
\hline
\hline
\noalign{\smallskip}
\multicolumn{1}{}{} &
\multicolumn{3}{c}{Laminar} &
\multicolumn{2}{c}{Turbulent} \\
\noalign{\smallskip}
\hline
\noalign{\smallskip}
 Run        & $\tau$  & $\dot T$ & $\dot M$  & $\tau$ & $\dot M$ \\
\noalign{\smallskip}
\hline
\noalign{\smallskip}
0.3+0.5  & $3\times10^{11}$ & $1\times10^{29}$ & $2\times10^{-14}$ & $7.6\times10^{-4}$ & 43  \\
0.4+0.8  & $1\times10^{11}$ & $5\times10^{29}$ & $8\times10^{-14}$ & $1.1\times10^{-2}$ & 63  \\
0.6+0.6  & $1\times10^{11}$ & $6\times10^{29}$ & $1\times10^{-13}$ & $2.0\times10^{-4}$ & 560 \\
0.6+0.8  & $5\times10^{10}$ & $3\times10^{30}$ & $4\times10^{-13}$ & $1.2\times10^{-2}$ & 62  \\
0.6+1.2  & $3\times10^{8}$  & $7\times10^{32}$ & $8\times10^{-11}$ & $1.0\times10^{-2}$ & 75  \\
\hline
\end{tabular}
\end{table}