condition mean min max 0 h after light 0.272359 0.0 0.544718 2 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 12 h after light 0.310894 0.0 0.621788 2 h after dark 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.295422 0.0 0.590844 12 h after dark 0.0 0.0 0.0