Fig. 4.
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Relation between ESPE fluence f800 (red stars, LHS ordinate) and decadal sunspot numbers ⟨SN⟩ (blue histogram – Wu et al. 2018) over the Holocene. The stars’ horizontal positions correspond to ⟨SN⟩ averaged for the preceding and subsequent decades around the decade when the ESPE occurred. The vertical blue dashed line denotes the median value ⟨SN⟩ = 74.5.
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