Open Access

Table 6.

Correlation coefficients, p-values, and the slopes of the best-fit lines for yearly differences between the MgII index (upper row) or number of active regions (lower row) and the correlated sunspot number depicted in the right panel of Fig. 6, together their 2σ upper and lower values.

CC p Slope +2σ slope −2σ slope
MgII 0.483 1.04e−03 0.034 0.0540 0.015
AR 0.467 2.41e−03 484.37 782.31 186.43

Notes. All slope values are multiplied by 1000.

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.