condition mean min max 0 h after light 16.57245 15.8038 17.3411 4 h after light 10.395615 9.37983 11.4114 8 h after light 12.126999999999999 10.9101 13.3439 4 h after dark 13.03405 12.2302 13.8379 8 h after dark 13.521899999999999 12.5719 14.4719 12 h after dark 16.00245 15.5289 16.476