\begin{table}%t3
   %%\centering
\par
     \caption{All EPIC-pn observations in full frame mode with the thin filter of \rxj\ with the derived variations of the pulse averaged spectra. }
        \label{pn-spectral}
%\centerline
{\begin{tabular}{ccccc}
\hline
\hline
Orbit	 &MJD     &	{\it kT}	     &{\it EW}	&	radius\\
	 &	  &	[eV]	     &	[eV]	&	[km]\\
 \hline
78	 &51~677   & 86.5 $\pm$ 0.4 &  --4.0 $\pm$ 4.0 & 4.79 $\pm$ 0.09\\ 
\it{175} &\it{51~870}   & \it{86.0 $\pm$ 0.7} &  \it{+5.6 $\pm$ 7.0} & \it{4.90 $\pm$ 0.14}\\
533/534  &52~585/7 & 88.4 $\pm$ 0.4 & --16.8 $\pm$ 3.3 & 4.70 $\pm$ 0.07\\
\it{711} &\it{52~940}   & \it{92.0 $\pm$ 0.6} &  \it{--64.7 $\pm$ 5.4} & \it{$-$}\\
815	 &53~148   & 94.6 $\pm$ 0.5 & --58.6 $\pm$ 4.2 & 4.29 $\pm$ 0.08\\
986	 &53~489   & 94.3 $\pm$ 0.4 & --57.8 $\pm$ 3.8 & 4.35 $\pm$ 0.07\\
1060	 &53~636   & 93.7 $\pm$ 0.5 & --55.0 $\pm$ 3.8 & 4.37 $\pm$ 0.08\\
1086	 &53~687   & 93.1 $\pm$ 0.5 & --55.9 $\pm$ 3.8 & 4.50 $\pm$ 0.08\\
1181	 &53~877   & 93.1 $\pm$ 0.6 & --51.2 $\pm$ 4.8 & 4.44 $\pm$ 0.10\\
1265	 &54~045   & 92.7 $\pm$ 0.6 & --53.6 $\pm$ 4.7 & 4.53 $\pm$ 0.11\\
1356	 &54~226   & 92.4 $\pm$ 0.6 & --44.1 $\pm$ 4.9 & 4.45 $\pm$ 0.11\\
1454	 &54~421   & 91.8 $\pm$ 0.6 & --44.6 $\pm$ 4.6 & 4.50 $\pm$ 0.10\\
\hline
\end{tabular}}
\medskip
Observations done in different observing modes, which were not used for the fit are in italic. The radius obtained from observation 711 is not used at all (see explanation at the end of Sect.~5). All errors correspond to 90\% confidence level.
\end{table}