Spatial distribution of the four following masks: 1 ≤ Av < 2 in black, 2 ≤ Av < 6 in brown, 6 ≤ Av < 15 in orange, and 15 ≤ Av in yellow.
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.
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