The line to continuum ratio relative to the line profile parameter P10. Each type of line profile is given by a specific symbol. Data points without a symbol do not have a clearly defined line profile. The broad single peaked sample includes sources with either a line/continuum ratio > 1.6 (blue line) and P10 > 6 (red line) or solely P10 > 10.
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.