condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.0265753 0.0 0.0531506 8 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0518075 0.0 0.103615 12 h after dark 0.0 0.0 0.0