Table 1: Observations and fit results for AA Tau from EPIC data, exposure times (ks) denote both the total and the filtered exposures for MOS and pn. $L_{\rm X}$ (obs./emitted) are given in the 0.2-10.0 keV band. Units are $N_{\rm H}$ in 1022 cm-2, kT in keV, EM in 1052 cm-3, and $L_{\rm X}$ in 1030 erg s-1.

Date		 Exposure $N_{\rm H}$ kT EM $L_{\rm X}$ $\chi ^2$ (d.o.f.)

2/14		 17/16/12 $\rm0.99^{+ 0.13}_{- 0.12}$ $\rm 2.38^{+ 0.41}_{- 0.15}$ $\rm 9.0^{+ 1.3}_{- 1.2}$ 0.48/1.11 68.7 (73)
2/16 17/16/12 $\rm 1.70^{+ 0.05}_{- 0.05}$ $\rm 3.86^{+ 0.19}_{- 0.18}$ $\rm 141.4^{+ 5.4}_{- 5.3}$ 9.64/20.8 835 (801)
2/18 17/13/9 $\rm 1.41^{+ 0.27}_{- 0.30}$ $\rm 2.07^{+ 0.69}_{- 0.36}$ $\rm 10.2^{+ 2.4}_{- 2.4}$ 0.42/1.20 44.0 (42)
2/20 17/16/11 $\rm 1.29^{+ 0.29}_{- 0.32}$ $\rm 2.08^{+ 0.94}_{- 0.49}$ $\rm 6.3^{+ 2.0}_{- 1.7}$ 0.28/0.73 42.1 (36)
2/22 20/17/9 $\rm0.90^{+ 0.46}_{- 0.43}$ $\rm 1.83^{+ 0.82}_{- 0.44}$ $\rm 3.5^{+ 1.5}_{- 1.1}$ 0.15/0.40 22.6 (21)
2/24 19/16/10 $\rm 1.73^{+ 0.30}_{- 0.27}$ $\rm 3.42^{+ 0.51}_{- 0.64}$ $\rm 9.0^{+ 2.1}_{- 1.6}$ 0.55/1.27 50.2 (58)
2/26 17/14/7 $\rm 1.16^{+ 0.11}_{- 0.10}$ $\rm 3.89^{+ 0.66}_{- 0.51}$ $\rm 21.6^{+ 2.1}_{- 2.0}$ 1.64/3.18 139 (134)
2/28 17/13/8 $\rm 1.33^{+ 0.20}_{- 0.36}$ $\rm 2.43^{+ 0.81}_{- 0.49}$ $\rm 9.3^{+ 2.7}_{- 2.2}$ 0.48/1.16 30.3 (41)


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