Fig. 2.
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Determination of the correction for the HMI sensitivity change: observing mode change on 13 Apr. 2016 causes a discontinuity in the level of Brms values of the internetwork data. The original data are displayed with the dark red and black dots, the corrected data with the light red dots. The dashed line indicates the polynomial fit of a degree of 3 used to obtain the offset.
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