Table 6: Count rate (in counts per second) and flux level in the 0.5-2.0 keV band for all known X-ray observations of XZ Tau. Flux in units of 10^-13 erg cm^-2 s^-1.

Date	Instr.	Rate	Flux
1981-31-01	IPC	0.017	1.82
1994-23-02	ASCA (SIS)	0.06	15
1996-12-31	PSPC	0.023	1.13
1997-02-10	PSPC	0.021	1.05
1997-05-31	HRI	0.0132	1.69
1999-12-14	HRI	0.0162	2.07
2000-09-09	XMM (pn)	0.13	2.9
2001-07-23	Chandra	0.024	0.96