condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 4 h after dark 0.2878795 0.0 0.575759 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0