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Fig. 2


UVOT lightcurve. The UVM2 rates (squares) were multiplied by 10, the UVW2 rates (circles) by 0.198, and UVW1 ones (triangles) by a factor 0.056. These two last factors are calculated by equalizing UVM2 and UVW2(UVW1) rates during observations 5 and 9, when two filters were used. For UVW1 and 2, error bars are often smaller than the data-point marker.

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