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Fig. 3


Histogram of the ISE for a set of 500 samples with 1000 data each, shown in light-gray and a set of 500 samples of 10 000 data each shown in dark-gray (see text for details).

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.