condition mean min max 0 h after light 0.0984395 0.0 0.196879 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.098132 0.0 0.196264