Figure 13.
Download original image
Reconstruction of the composite MgII index by using synoptic radio observations at 10.7 cm, and 30 cm. The residual error is expressed in the same (dimensionless) units as the MgII index. Instances at which a different instrument was used to estimate the MgII index are shown by dotted lines. For details on the MgII composite, see Viereck et al. (2001).
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.