\begin{table}%[htp]%T4
   %%\centering
\par
   \caption{Pointing stability (operational vs. worst case simulation). Controller errors
$\Phi$, $\Theta$, $\Psi$ are given in arcseconds.}
\label{pointing}
        \begin{tabular}{l|ccc|ccc|ccc}
            \hline\hline
 & \multicolumn{3}{c}{Simulation} &  \multicolumn{3}{c}{Operational}  &
   \multicolumn{3}{c}{Operational} \\ 
& \multicolumn{3}{c}{} &  \multicolumn{3}{c}{18 Dec 2002}  &
   \multicolumn{3}{c}{25 May 2003} \\ \hline
 & $\Phi$ & $\Theta$ & $\Psi$  & $\Phi$ & $\Theta$ & $\Psi$& $\Phi$ & $\Theta$ & $\Psi$ \\ 
   %\noalign{\smallskip}
            \hline
            \noalign{\smallskip}
Max & 7.5 & 8.1& 9& 6.958 & 0.8906 & 2.59 & 6.62 & 0.885 & 1.85\\
Min & $-$7.5 & $-$8 & $-$7.5 & $-$5.57 & $-$1.0738 & $-$4.86 & $-$ 7.69 &	$-$0.834 & $-$3.06\\
\hline
         \end{tabular}
\par
    \end{table}