condition mean min max 3 h after light 1.1388396666666667 0.445919 1.91966 6 h after light 1.4402043333333332 0.884323 1.85109 9 h after light 1.7246066666666666 1.04206 2.56149 12 h after light 1.7935400000000001 1.11997 2.32682 3 h after dark 2.86244 2.52505 3.17636 6 h after dark 2.9295633333333333 2.15655 4.05133 9 h after dark 2.89349 1.97113 3.44506 12 h after dark 2.005715 1.78618 2.22525