condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.530145 0.0 1.06029 8 h after light 0.158889 0.0 0.317778 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