Free Access
Table 1
Frequency of multiple observations.
| N spec. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| N obj. | 3029 | 784 | 295 | 149 | 55 | 17 | 9 | 1 |
| N spec. | 9 | 11 | 12 | 15 | 16 | 18 | 19 | 20 | 21 | |||||||||||||
|
|
||||||||||||||||||||||
| N obj. | 1 | 2 | 2 | 1 | 4 | 2 | 14 | 90 | 4 | |||||||||||||
Notes. The majority of objects (3029) have been observed once. Among the 1430 sources observed several times, 120 have over ten 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.