Table 1: The log of all analysed observations, and exposure times. Values in brackets show net exposure times after filtering for particle induced flares.
Date Mission Instr. $\vec{T}{\rm _{exp}}$ (ks)

11/05/1994 ASCA SIS0-1 34

29/11/1996 ASCA SIS0-1 27

LECS 36

24/04/1998 BeppoSAX MECS 77

PDS 33

14/11/2000 Chandra ACIS-S HETG 76

13/05/2001 XMM- Newton EPIC-PN 38 (6.0)

01/12/2001 XMM- Newton EPIC-PN 25 (19.1)

**Table 1:** The log of all analysed observations, and exposure times. Values in brackets show net exposure times after filtering for particle induced flares.
Date	Mission	Instr.	$\vec{T}{\rm _{exp}}$ (ks)
11/05/1994	ASCA	SIS0-1	34
29/11/1996	ASCA	SIS0-1	27
		LECS	36
24/04/1998	BeppoSAX	MECS	77
		PDS	33
14/11/2000	Chandra	ACIS-S HETG	76
13/05/2001	XMM- Newton	EPIC-PN	38 (6.0)
01/12/2001	XMM- Newton	EPIC-PN	25 (19.1)

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