There are spikes in the incidence rate on the day of or day after each release (Apr 12, Mar 15, Feb 15, etc). This implies it's related to updates
Bug 1798904 Comment 6 Edit History
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There are spikes in the incidence rate on the day of or day after each release (Apr 12, Mar 15, Feb 15, etc), of 3-5x. This implies it's related to updates