How is "new revisions" graph populated?

Is the new revisions graph updates based on scheduled backups only or based on checks (like the other graphs). It seems to be the former, but would be nice to have the latter, as I am running some backups on my NAS and it would be great to see those show up in the new revisions graph as well, like they do in the storage plots.

Yes, this graph is updated every time a backup job runs, so only local back ids are included. It would be useful to include other back ids, but I think that you can’t use the check logs to obtain accurate new revision numbers every day, as the check jobs are usually not frequently scheduled.