Open Access

Fig. 10


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Daily data for number of hours with no clouds and one-, two-, three-, and four-layered clouds during daytime for each month. The red markers and the green markers means the day-length and the sunshine duration.

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.