condition mean min max 4 h after light 5.5 5.5 5.5 8 h after light 8.65 5.7 11.6 12 h after light 21.55 4.0 39.1 4 h after dark 27.349999999999998 18.9 35.8 8 h after dark 10.399999999999999 5.6 15.2 12 h after dark 15.1 7.7 22.5