highly significantP = 6.17 × 10 −7
From that initial value, the absolute decline is highly significant and similar for each subsequent cycle, in the range of 0.020–0.024 hour −1 ( P = 6.17 × 10 −7 , 9.74 × 10 −7 , 2.41 × 10 −5 for cycles 2, 3, and 4, respectively).