Burst actors(5.3.2)

Number of actors who have suddenly started producing tickets and events after a period of inactivity (or zero history). For example, a new account that produces 200 events in its first day deserves an authentication check. The burst threshold is set by people's debut weeks only, at their mean plus two standard deviations; an erased account is not a person. With fewer than three people, or when every person debuts with the same count, no threshold is set, nothing is flagged and the figure shows "—" rather than 0. The count is split by the type of account Jira reports: people's accounts form the headline, and apps such as Automation for Jira, service-desk customers and accounts Jira returned no type for are counted beside it, never inside it.