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The rules behind this section, and why those thresholds
RuleFires whenWhy that number
A service the market runs on is in trouble a watched service moves into down or degraded No threshold to choose: the source reports a closed state. The care is elsewhere — only changes with a recent observation count, so a service nobody checked lately is «unknown», not «broken». Without that, 241 of 300 services would have fired on the first day.
A theft larger than most on record a theft above the 90th percentile of every theft we have with a figure Of 2,845 recorded thefts with a figure the median is $700K and the 90th percentile $20M. A percentile rather than a round number, so the bar moves with the archive instead of ageing.