condition mean min max 4 h after light 0.5 0.5 0.5 8 h after light 0.95 0.7 1.2 12 h after light 8.399999999999999 6.1 10.7 4 h after dark 23.049999999999997 11.8 34.3 8 h after dark 9.5 8.5 10.5 12 h after dark 2.25 1.2 3.3