condition mean min max 4 h after light 3.463035 2.8663 4.05977 8 h after light 1.904975 1.72256 2.08739 12 h after light 3.7690349999999997 3.00587 4.5322 4 h after dark 3.25312 3.24111 3.26513 8 h after dark 2.4267849999999997 2.14655 2.70702 12 h after dark 2.95586 2.5804 3.33132