condition mean min max 4 h after light 1.88775 1.77473 2.00077 8 h after light 3.05769 3.02155 3.09383 12 h after light 3.2135 2.64029 3.78671 4 h after dark 5.0525166666666665 4.6256 5.28858 8 h after dark 3.73122 3.47149 4.00191 12 h after dark 2.91 2.54094 3.4854