Free Access
Fig. 2.
σΔmag for each visit. The sources we used to determine the aperture corrective factors have r(AB) magnitudes in the range 16–21. The points above the black line correspond to the eight visits that we excluded from our dataset.
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.