I would like an option to only include calculations for periods within the business hours defined.
Thus, a 24hr period with averages would only include the average of the 9 or so business hours.
A 30 day period would skip weekends, etc.
This allows less variations between what can be considered thresholds (>75% avg might be major for 4 hrs while >50% might be critical for 7 days).
It also allows people who do not take account of the off hours to still make sense of averages.