\begin{table}%t1
%\centering
\par
\caption{The results of fitting different continuum models to the PN data 
in the 2--12~keV energy range. 
The fluxes correspond to the 2--10~keV band and are corrected for absorption. 
 The units are $10^{-10}$~erg~cm$^{-2}$~s$^{-1}$. 
}\label{table:fits}
\begin{tabular}{lcccc}
\hline
\hline
\noalign {\smallskip}
Models      &    ${\cal N}_{\rm H}$              &   $kT$ (keV)          &  $\chi^{2}$/d.o.f.   & Flux \\
            &    {\tiny (10$^{23}$~cm$^{-2}$)}  &   or  $\Gamma$ &   & {\tiny (2--10~keV)}  \\
\noalign {\smallskip}
\hline
\noalign {\smallskip}
pow         & $2.02\pm0.04$ &  $1.83\pm0.05$ &1111/1141         &  $2.40\pm0.23$\\
\noalign {\smallskip}
bb         & $1.31\pm0.03$ &  $1.93\pm0.03$ &  1206/1141         &  $1.52\pm0.02$ \\
\noalign {\smallskip}
diskbb    & $1.69\pm0.03$ &  $3.4\pm0.1$ & 1099/1141     &  $1.89\pm0.21$   \\
\hline
\hline
\end{tabular}
\end{table}