condition mean min max 4 h after light 0.9634325 0.895475 1.03139 8 h after light 1.47355 1.11916 1.82794 12 h after light 1.32514 1.21193 1.43835 4 h after dark 2.381535 1.69673 3.06634 8 h after dark 1.4179849999999998 1.28518 1.55079 12 h after dark 1.308565 1.29686 1.32027