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Fig. 1

image

Daily sunspot group area on the visible side of the Sun as recorded in the RGO-SOON data set (black), and that obtained from the synthetic record SGR300 within ± 70° from the central meridian (red). The same is plotted but taking only the decay phase of sunspot groups in the RGO-SOON data set (blue) and SGR300 (magenta).

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