Free Access

Fig. 13


Variability in amplitude of f1 (°), f2 (+), and f3 (×) in 2015 (top) and 2016 (bottom). Amplitudes were measured in windows of 10 d (f1 ) and 40 d (f2 and f3 ), stepped by 1d.

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.