Free Access
Fig. 11

Left – the moving mean normalized values for | N−S | (upper curve, open circles) and N + S (lower curve, solid circles) versus the phase of the activity cycle; right – the ratio of these curves (mean cycle for the absolute asymmetry).
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.