Table 2: Best-fit models of the EPIC data (in the 1.5-41 Å band), with 90% statistical confidence ranges computed for one interesting parameter at a time; nominal errors on Ti and  EMi are at the 10% level. Element abundances are relative to the solar ones (Grevesse et al. 1992). Mean temperatures are calculated as <T> = $\sum_{i=1}^{3}EM_{i}~T_{i}/\sum_{i=1}^{3}EM_{i}$.
  pn MOS2 
$\log T_{1,2,3}~({\rm K})$ 6.44, 6.92, 7.28 6.70, 6.95, 7.25
$\log EM_{1,2,3}~({\rm cm}^{-3})$ 52.6, 53.1, 53.0 52.5, 53.4, 53.2
$\log <T>~({\rm K})$ 7.06 7.07
Ca 0.38 0.22
O $0.58~\pm~0.03$ $0.37~\pm~0.05$
Ne $2.35~\pm~0.14$ $0.58~\pm~0.09$
Mg $1.95~\pm~0.13$ $0.96~\pm~0.08$
Si $1.23~\pm~0.11$ $0.69~\pm~0.06$
S $0.58~\pm~0.20$ $0.60~\pm~0.13$
Fe $1.54~\pm~0.02$ $0.87~\pm~0.02$
Ni $4.1~\pm~0.3$ $1.4~\pm~0.2$
$N_{\rm H}~({\rm cm}^{-2})^{b}$ 1018 1018
$\chi^{2}_{\nu} /{\rm d.o.f.}$ 1.1/367 1.2/150
a Fixed to 0.25 times the iron abundance (see text for explanations).
b Fixed (see text).

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