condition mean min max 4 h after light 1.3309549999999999 1.16453 1.49738 8 h after light 1.81274 1.75654 1.86894 12 h after light 2.39609 2.24252 2.54966 4 h after dark 3.861485 3.67514 4.04783 8 h after dark 3.371655 3.05988 3.68343 12 h after dark 2.83718 2.70423 2.97013