Table 3: Spectral fits with an ionized absorbera.
model $N_{\rm H}^b$ z $\xi^c$ $Z_{\rm Fe}^d$ $\chi ^2$ (d.o.f.)
PL $0.26\pm0.05$ 0 FIX $\rm0.21^{+0.50}_{-0.20}$ 1FIX 134.7/143
BKNPL $\rm0.23^{+0.20}_{-0.10}$ 0 FIX <0.8 1 FIX 131.4/140
CUTOFFPL $\rm0.20^{+0.10}_{-0.06}$ 0 FIX <1.0 1 FIX 126.5/142
PL $\rm 50^{+150}_{-25}$ 3.27 FIX $\rm 1800^{+2500}_{-1400}$ <0.25 140.8/142
BKNPL $\rm 36^{+150}_{-24}$ 3.27 FIX $\rm 1300^{+3700}_{-1100}$ <0.25 129.5/141
CUTOFFPL $\rm 36^{+150}_{-24}$ 3.27 FIX $\rm 1700^{+3800}_{-1500}$ <0.3 127.6/141
a Continuum fit values are indistinguishable from those in Table 2.
b In 1022 cm-2; c ionization parameter. d Iron abundance in unit of the solar value.

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