DevTools is transitioning to the new metric DEVTOOLS_TOOLBOX_OPENED_COUNT, which records the
number of times a user opens the toolbox per day. Previously DevTools was using the metric
DEVTOOLS_TOOLBOX_OPENED_BOOLEAN which only captured the toolbox being opened once per user, per day.
As the rollout of the new metric continues this graph will shift over time and have certain releases missing.
Also note that the new metric has been changed to opt-out for release so those numbers will also shift as
it rolls out into the full release population.
The DEVTOOLS_TOOLBOX_OPENED_PER_USER_FLAG will become opt-out for release when
bug 1250171 is fixed, however until
that time the release (not pre-release) numbers will remain highly inaccurate.
Over a rolling 6 months this chart shows the amount of time spent (y axis) with the DevTools toolbox opened and the release. Size of the circles indicates the number of users reporting that time slot.
These metrics are to be used as a guide only, when making decisions please always double check with other sources for verification.