Table 2: Spectral parameters as derived from simultaneously fitting the EPIC PN and MOS phase-averaged spectra for the two best fit models discussed in the text. Quoted errors refer to the 90$\%$confidence level for the parameter of interest.
  Partial Absorber Black-body MEKAL MEKALa $\chi^2_{\nu}$ ($\chi^2$/d.o.f.)
  $N_{\rm H}^{b}$ $\rm Cov_{F}$c $kT_{\rm BB}$ $C_{\rm BB}^{d}$ $A_{\rm Z}^{e}$ kT1 C1f kT2g C2f $\alpha^{h}$  
  (1023 cm-2)   (eV) (10-5)   (keV) (10-4) (keV) (10-4)    

A		 $\rm 1.0^{+0.4}_{-0.3}$ $\rm0.51^{+0.07}_{-0.09}$ $\rm 49.7^{+5.6}_{-2.9}$ $\rm 1.3^{+0.5}_{-0.3}$ 0.39 $\pm$ 0.16 0.18 $\pm$ 0.02 $\rm 2.4^{+1.1}_{-0.9}$ $\rm 11^{+6}_{-2}$ $\rm 19.04^{+0.38}_{-1.98}$   0.906 (522/576)

B		 $\rm0.83^{+0.51}_{-0.32}$ $\rm0.43^{+0.15}_{-0.17}$ 51.2 $\pm$ 6.0 $\rm 1.04^{+0.63}_{-0.28}$ $\rm0.53^{+0.71}_{-0.26}$ $\rm0.18^{+0.02}_{-0.01}$ $\rm 1.6^{+2.0}_{-1.0}$ $\rm 27^{+\infty}_{-17}$ $\rm 53.48^{+68.16}_{-19.75}$ $\rm 1.6^{+2.9}_{-0.40}$ 0.905 (520/575)
a Second optically thin plasma is a MEKAL (model A) or CEMEKL (model B). b Column density of the partial absorber. c Covering fraction of partial absorber. d Normalization constant of black-body ( BBODY) defined as L39 d10-2, where L39 is the luminosity in units of 10 $^{39}~\rm erg~s^{-1}$ and, d10 the distance in units of 10 kpc. e Metal abundance in units of the cosmic value (Anders & Grevesse 1989) linked for the two thin plasma emissions. f Normalization constant of MEKAL or CEMEKL model defined as ${\rm EM}\times10^{-14}~(4~\pi~D^2)^{-1}$, where EM is the emission measure in $\rm cm^{-3}$ and D is the distance in cm. g Maximum temperature in CEMEKL. h Power law index in CEMEKL.

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