Objects with stable profile shape. Horizontal axis represents the number of observations (spectra) for each object and the number of objects is on the vertical axis. There are altogether 660 objects belonging to a unique classification category. Among them, 456 objects were observed twice, 134 sources were three spectra, and the remaining 70 sources have over 3 observations.
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.