S76A Inflight Power Checks
Jibboo,
While NickLappos provided the appropriate technical rationale to address your issue, I don’t think he answered your (specific) question which was “to what do you compare today's rolling average with to get the answer for the 3rd criteria?”
Using your example that “the last 30 min power check had a margin of +4” .......when you subtract today’s rolling average (average of the most recent 20 checks) from the rolling average baseline (average of the first 20 checks), the result cannot exceed 4.
NickLappos,
Is that correct?