condition mean min max 4 h after light 17.1066 16.4472 17.766 8 h after light 11.211400000000001 10.4703 11.9525 12 h after light 11.986149999999999 11.5207 12.4516 4 h after dark 17.466133333333335 16.4188 18.9451 8 h after dark 19.5563 17.4813 22.1234 12 h after dark 19.32893333333333 18.3329 20.8437