\begin{table}%t6
\caption{\label{tab:edgppsset05}Evolution of the spectral parameters for the edge component as a
function of phase for the 2005 September observation (PN data) with uncertainties at $1\sigma$
confidence level.}     
%\centerline
 {\small \begin{tabular}{ccc} 
\hline \hline \noalign{\smallskip}
Phase bin$^a$& $E$  & $\tau_{\max}$ \\
     &     keV    &        \\
\hline  
0.0$-$0.2 &$1.08   \pm0.04$       &  $    0.13    \pm  0.06 $  \\
0.2$-$0.4 &$1.07   \pm0.01$       &	$  0.26    \pm  0.04 $  \\
0.4$-$0.6 &$1.06   \pm0.03$      &	 $  0.31    \pm  0.07 $   \\
0.6$-$0.8 &$1.05   \pm0.02$      &	 $  0.21    \pm  0.07 $  \\
0.8$-$1.0 &$1.05   \pm0.03$     &	$  0.13    \pm  0.07 $  \\
\hline       
\end{tabular} }
\medskip
$^a$~The five spectra are fitted together and result in a $\chi^2_{\rm red}$ of~1.01 (for 406~d.o.f.).
\end{table}