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Fig. 4

image

Comparison between normalized irradiance as observed by SDO/EVE MEGS-P (blue curve) and GOES/EUVS-E at 10 s (red curve) and 60 s (green curve) cadence during the 15 February 2011 flare. The GOES SXR light curve is also plotted in black for context. The vertical dashed line denotes the time of the peak of the GOES SXR derivative.

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