Equivalent widths for all lines and data sets for . The deviation from the mean value from each data set is plotted in units of percent of the overall mean value and as a function of the time of day in hours when it was acquired. Symbols according to solar disk position. Asterisk: N, plus: S, triangle: W, square: E.
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.
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