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Time series of MgII index observations scaled to the Bremen composite. The blue curve is the composite created from GOME, SCIAMACHY, and GOME-2 datasets. SORCE SOLSTICE A and B are the red and purple curves. The brown curve is the data from NOAA-16. All data has been smoothed over an 81-day window and scaled to match the Bremen composite during calendar year 2004.
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