\begin{table}%t1
%\centering
\par
\caption{Parameters and initial conditions in computation.}\label{tab1}
\begin{tabular}{ccccccc}
\hline \hline
 & $R$ & $u_0$ & $s_{\rm M}$ & $s_{\rm i}$ & $k_{\rm i}$ & $k_\Delta$ \\ \hline
RUN1 & 0.1 & 10 & 300 & 120 & 0.1 & 1.0 \\
RUN2 & 0.1 & 300 & 1500 & 500 & 0.1 & 0.2 \\
RUN3 & 0.1 & 3 & 500 & 420 & 1.0 & 0.2 \\ 
RUN4 & 0.01 & 100 & 1500 & 200 & 0.01 & 1 \\ 
RUN5 & 0.01 & 30 & 1500 & 1320 & 0.05 & 0.01 \\ 
RUN6 & 0.01 & 3 & 2000 & 1820 & 0.05 & 0.01 \\ \hline
\end{tabular}
\end{table}