Table 2: X-ray luminosity (0.2-2.0 keV) in 1026 erg/s determined from XMM-Newton data for 61 Cyg A and B.
Obs. date $L_{\rm X}$ (A) $L_{\rm X}$ (B)
2002-05-14 $19.5 \pm 0.8$ $7.6 \pm 0.5$
2002-11-17 $19.3 \pm 0.8$ $6.9 \pm 0.4$
2003-05-12 $18.2 \pm 0.7$ $7.2 \pm 0.5$
2003-11-22 $16.9 \pm 1.0$ $6.2 \pm 0.6$
2004-05-01 $11.2 \pm 0.3$ $6.5 \pm 0.4$
2004-11-02 $8.3 \pm 0.6$ $6.0 \pm 0.4$
2005-04-23 $8.6 \pm 0.4$ $6.5 \pm 0.4$
2005-11-05 $7.4 \pm 0.5$ $8.0 \pm 0.5$

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