condition mean min max 3 h after light 137.153 107.615 168.833 6 h after light 86.9983 53.3757 132.212 9 h after light 140.5203 96.4759 173.824 12 h after light 218.5925 153.136 267.833 3 h after dark 40.4234 37.8574 42.6616 6 h after dark 58.3178 47.7756 69.9416 9 h after dark 55.4647 37.2152 76.2588 12 h after dark 128.0785 124.676 131.481