Free Access

Fig. 2

thumbnail

The latitude of all 30 084 sunspot detections from solar cycle 23. The end of solar cycle 22 can be seen as well as the onset of cycle 24. Note that there is a much larger “gap” between cycles 23 and 24 than between cycles 22 and 23. This confirms the lack of solar activity from mid 2008 to early 2010.

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.