Free Access

Fig. 1


A representative image from the Kodaikanal white-light digitized data. Two detected sunspots are highlighted by two white rectangular boxes. In the inset, we show a zoomed-in view of one of the sunspots. The yellow contours represent the detected area for the sunspots.

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.