Mean difference in fitted rate -0.00399 per hour; SD across experiments 0.00358 3 experiments: power 20.8% 4 experiments: power 34.2% 5 experiments: power 47.6% 6 experiments: power 59.4% 7 experiments: power 69.3% 8 experiments: power 77.2% 9 experiments: power 83.3% 10 experiments: power 88.0% 11 experiments: power 91.4% 12 experiments: power 93.9%