Table 13: Fits with a finite number of ionization components to the iron column densities for the RGS data (Steenbrugge et al. 2003). The number of ionization components is indicated by N. In the last column we give the significance according to an F-test of the added component.
N $\chi^2$ /d.o.f. log $\xi$ log $N_{\rm H}$ Sign.

10^-9 W m m^-2

1 79/15 0.22 25.2

2 22.9/13 2.50, 0.20 25.7, 25.2 98.8

3 10.5/11 2.57, 1.61, 0.20 25.7, 25.1, 25.2 90.9

4 7.2/9 2.57, 1.62, 0.65 25.7, 25.1, 25.0 72.7

-0.03 25.0

5 4.9/7 3.10, 2.48, 1.56 25.8, 25.6, 25.1 71.1

0.65, -0.03 25.0, 25.0

**Table 13:** Fits with a finite number of ionization components to the iron column densities for the RGS data (Steenbrugge et al. 2003). The number of ionization components is indicated by N. In the last column we give the significance according to an F-test of the added component.
N	$\chi^2$ /d.o.f.	log $\xi$	log $N_{\rm H}$	Sign.
		10^-9 W m	m^-2
1	79/15	0.22	25.2
2	22.9/13	2.50, 0.20	25.7, 25.2	98.8
3	10.5/11	2.57, 1.61, 0.20	25.7, 25.1, 25.2	90.9
4	7.2/9	2.57, 1.62, 0.65	25.7, 25.1, 25.0	72.7
		-0.03	25.0
5	4.9/7	3.10, 2.48, 1.56	25.8, 25.6, 25.1	71.1
		0.65, -0.03	25.0, 25.0

Source LaTeX | All tables | In the text

	1 Introduction
	2 Observation and data reduction
	3 Spectral data analysis
	4 Timing analysis
	5 Discussion
	6 Ionization structure
	7 The outflow
	8 Summary and conclusions
	References
	Online Material
	Appendix A
	Appendix B
	Appendix C