Fig. C.1.
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Relationship between reconstructed annual TSI and the corresponding sunspot number input. Top panel: Reconstruction based on telescopic SN (ISNv2; red) and on 14C-derived SN series (Usoskin et al. 2021, 2025, 2026, green, blue, and orange, respectively, indicating the different input datasets). Bottom: Same as top panel, but showing only the reconstruction based on the 14C-derived SN series.
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