**Table 2:** Results for power law fits to the data of orbit 171-1 in limited energy bands, assuming galactic absorption ( $N_{\rm H} = 1.66\times 10^{20}$ cm^-2).
Energy band	$\Gamma$	Norm	$\chi^2_{\rm red}$ /d.o.f.
(keV)		(1)
0.6-1.2	$2.25 \pm 0.01$	$5.99 \pm 0.01$	0.997/120
1.2-1.8	$2.32 \pm 0.02$	$6.03 \pm 0.04$	1.21/121
1.8-2.3	$2.40 \pm 0.05$	$6.38 \pm 0.23$	1.32/ 97
2.5-3.5	$2.21 \pm 0.04$	$5.60 \pm 0.26$	0.98/199
3.5-4.5	$2.39 \pm 0.07$	$7.19 \pm 0.69$	1.03/218
4.5-6.0	$2.47 \pm 0.08$	$8.15 \pm 1.03$	1.04/298
6.0-8.0	$2.59 \pm 0.11$	$9.95 \pm 2.06$	0.99/213
8.0-10.0	$2.77 \pm 0.28$	$13.86 \pm 7.52$	0.99/ 70
10.0-12.0	$2.82 \pm 0.78$	$16.35 \pm 29.01$	1.24/ 17

(1): Normalization at 1 keV in 10^-2 ph/keV/cm²/s.

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