Free Access

Fig. 2


Series of decadal sunspot numbers, reconstructed between 1150 BC and 1950 AD, using the ensemble of 106 series (see text); the ensemble mean (solid line) and inferred 95% CI (shading) are shown. Decadal group sunspot numbers (Hoyt & Schatten 1998) directly observed since 1610 AD are shown in red. Horizontal dashed lines define the bounds of the three suggested modes as defined in Fig. 3: Grand minimum, Regular and Grand maximum modes, denoted “Min”, “Regular” and “Max”, respectively. Table for this plot is available at the CDS.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.