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Table 1.

Summary of data sets.

Set Year JD start JD end Num Refs.
IUE 1983 45580.974 45587.890 28 1
IUE 1988 47502.556 47507.685 130 2
IUE 1992 48643.473 48648.598 148 3
IUE 1995 49730.917 49746.574 146 3, 4
XMM-Newton 2010 55480.62 55507.35 5, 6

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