condition mean min max 0 h after light 0.0 0.0 0.0 2 h after light 2.192805 0.0 4.38561 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 3.242835 0.0 6.48567 2 h after dark 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0