\begin{table}%t2
\caption{\label{pow}Results of fitting the EPIC data with a single power law with free absorption.}                 
%\centering
\par
\begin{tabular}{ c c c c c c}  
\hline\hline            
Date & $N_{\rm H}$ & $\Gamma$ & $F_{\rm 1 ~ keV}$ & $F_{\rm 2-10 ~ keV}$  & $\chi^2/\nu$ ($\nu$) \\
     & [$10^{21} ~ \rm cm^{-2}$]&   & [$\mu$Jy]       & [$\rm erg ~ cm^{-2} ~ s^{-1}$]  &   \\     
 (1) & (2) & (3) & (4) & (5) & (6) \\
\hline                         
July 10--11, 2007  & 3.05 $\pm$ 0.06 & 2.01 $\pm$ 0.02 & 2.58 $\pm$ 0.04 & $9.64 \times 10^{-12}$ & 0.942 (1347)\\
December 5, 2007   & 2.92 $\pm$ 0.06 & 1.99 $\pm$ 0.02 & 1.96 $\pm$ 0.04 & $7.65 \times 10^{-12}$ & 1.026 (1250)\\
January 8, 2008    & 2.86 $\pm$ 0.06 & 1.91 $\pm$ 0.01 & 1.95 $\pm$ 0.03 & $8.51 \times 10^{-12}$ & 0.905 (1381)\\
\hline
\end{tabular}
\end{table}