The stats for "Tickets participants" in http://korma.wmflabs.org/browser/demographics.html look suspicious:
- It has no "retained" data at all.
- We switched from Bugzilla to Phabricator 13 months ago and there is activity for 1year<x≤0.5years but not for 0years<x≤0.5years.
- Do the "Tickets participants" stats actually query Phab? I assume it's Bugzilla only?