Fig. 6

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Cumulative count visualisation. The red curve shows the observed cumulative counts over time. The expectation of a constant source is indicated as a dashed curve and grey intervals corresponding to 1, 2, and 3σ.

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.