condition mean min max 0 h after light 16.901850000000003 16.3317 17.472 4 h after light 13.767199999999999 13.7176 13.8168 8 h after light 12.9245 12.2901 13.5589 4 h after dark 18.2367 17.3 19.1734 8 h after dark 16.2006 15.9006 16.5006 12 h after dark 15.593499999999999 14.9781 16.2089