condition mean min max 0 h after light 3.4104 2.60554 4.21526 4 h after light 2.69123 2.37598 3.00648 8 h after light 1.79513 1.46072 2.12954 4 h after dark 4.19214 4.15628 4.228 8 h after dark 3.77189 3.26821 4.27557 12 h after dark 3.533865 2.68698 4.38075