condition mean min max 4 h after light 1.9 1.9 1.9 8 h after light 15.25 9.7 20.8 12 h after light 34.35 29.0 39.7 4 h after dark 27.85 23.3 32.4 8 h after dark 13.65 7.2 20.1 12 h after dark 11.399999999999999 4.9 17.9