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Fig. 1.
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Timeseries of HMI and AIA 1600 Å observations. (a) Mean unsigned magnetic field and (b) mean AIA 1600 Å brightness averaged over a 0.9 R⊙-radius disk (blue) and a 0.4 R⊙-radius disk (orange) from 13 May 2010 to 9 June 2017. The black vertical line at March 2014 shows the starting point of the final dataset used.
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