Table 2: Best fit parameters for the power-law model using the MOS and pn data all at once. The errors are in the range $\Delta \chi ^2 < 2.7$ (90% confidence level) on one parameter. The regions shown in Fig. 8. Norm is given in units of photons/cm²/s/keV/arcmin² at 1 keV.
Region $\chi^2$ (d.o.f.) $N_{{\rm H}}$ (10²² cm^-2) $\Gamma$ Norm

1 952 (909) 0.66 (0.64-0.69) 2.34 (2.29-2.39) 6.06e-5 (5.75-6.41)

2 530 (468) 0.54 (0.51-0.56) 2.68 (2.61-2.75) 6.94e-5 (6.51-7.39)

3 533 (495) 0.47 (0.45-0.49) 2.58 (2.51-2.65) 3.59e-5 (3.36-3.86)

4 540 (518) 0.77 (0.74-0.82) 2.23 (2.17-2.29) 8.33e-5 (7.73-8.93)

5 656 (632) 0.68 (0.66-0.70) 2.46 (2.42-2.51) 1.65-e4 (1.58-1.73)

6 738 (642) 0.77 (0.75-0.80) 2.30 (2.26-2.35) 2.26e-4 (2.15-2.38)

7 394 (356) 0.89 (0.85-0.94) 2.15 (2.09-2.22) 1.54e-4 (1.42-1.67)

8 822 (761) 1.05 (1.02-1.08) 2.52 (2.48-2.56) 3.04e-4 (2.90-3.20)

**Table 2:** Best fit parameters for the power-law model using the MOS and pn data all at once. The errors are in the range $\Delta \chi ^2 < 2.7$ (90% confidence level) on one parameter. The regions shown in Fig. 8. *Norm* is given in units of photons/cm²/s/keV/arcmin² at 1 keV.
Region	$\chi^2$ (d.o.f.)	$N_{{\rm H}}$ (10²² cm^-2)	$\Gamma$	Norm
1	952 (909)	0.66 (0.64-0.69)	2.34 (2.29-2.39)	6.06e-5 (5.75-6.41)
2	530 (468)	0.54 (0.51-0.56)	2.68 (2.61-2.75)	6.94e-5 (6.51-7.39)
3	533 (495)	0.47 (0.45-0.49)	2.58 (2.51-2.65)	3.59e-5 (3.36-3.86)
4	540 (518)	0.77 (0.74-0.82)	2.23 (2.17-2.29)	8.33e-5 (7.73-8.93)
5	656 (632)	0.68 (0.66-0.70)	2.46 (2.42-2.51)	1.65-e4 (1.58-1.73)
6	738 (642)	0.77 (0.75-0.80)	2.30 (2.26-2.35)	2.26e-4 (2.15-2.38)
7	394 (356)	0.89 (0.85-0.94)	2.15 (2.09-2.22)	1.54e-4 (1.42-1.67)
8	822 (761)	1.05 (1.02-1.08)	2.52 (2.48-2.56)	3.04e-4 (2.90-3.20)

Source LaTeX | All tables | In the text