\begin{table}%t2
 %\centering
\par
\caption{Tests of computer code.}\label{CodeTest}
 \small \begin{tabular}{c c c c c c}
\hline \hline\noalign{\smallskip}
%\noalign{\vspace{0.03in}}
$n$ & $\mu$ & $\tau$ & $T_{\rm sim}$ & $T_{\rm run}$ & $\epsilon$ \\
%\noalign{\vspace{0.03in}}
\omit & \omit & [yr step$^{-1}$] & [yr] & [min] & [AU] \\
%\noalign{\vspace{0.03in}}
\hline\noalign{\smallskip}
%\noalign{\vspace{0.03in}}
  1 & $1 \times 10^{-3}$ & $5 \times 10^{-6}$ & 50 & $10^{0}$ & $10^{ 0}$ \\
  2 & $1 \times 10^{-3}$ & $5 \times 10^{-7}$ & 50 & $10^{1}$ & $10^{-1}$ \\
  3 & $1 \times 10^{-3}$ & $5 \times 10^{-8}$ & 50 & $10^{2}$ & $10^{-2}$ \\
  4 & $1 \times 10^{-3}$ & $5 \times 10^{-9}$ & 50 & $10^{3}$ & $10^{-3}$ \\
\hline
\end{tabular}
\end{table}