condition mean min max 3 h after light 0.035548 0.0 0.106644 6 h after light 0.0 0.0 0.0 9 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 3 h after dark 0.036173333333333335 0.0 0.10852 6 h after dark 0.0286527 0.0 0.0859581 9 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0