Winters coming
If you look up the hold over tables after de icing you'll usually see the time quoted as '15:45' meaning between 15 and 45 minutes.
I deduse that 15mins is the min hold over and 45 is the max...depending on precipitation and severity of accumulation...but exactly how do you scientifically interpolate these values?
Does your company Ops Manual give any guidance, or do you know of a certification rule?