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Annual variations from 1750 to 1850, smoothed using a 1,4,6,4,1-binomial filter. Red (black) lines show output of the OSF continuity model with (without) the addition of solar cycle 4b. Blue lines and the shaded regions show (a) annual auroral nights, NA (b) B*(10Be) and (c) 14C production rate, with y-axis inverted, to follow the B(OSF) variations.
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