condition mean min max 4 h after light 16.13375 15.2577 17.0098 8 h after light 12.07085 11.1571 12.9846 12 h after light 15.33615 13.3667 17.3056 4 h after dark 27.232866666666666 24.006 29.8117 8 h after dark 24.2014 23.0635 25.9106 12 h after dark 21.3471 19.7079 23.4917