Figure 1


Download original image

The S4 index (left panels) and signal fading depth (right panels) projected on geographic maps (top panels, using data during 10:30–18:00 UT) and at selected sites (bottom panels) on 15 January 2022.

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.