condition mean min max 0 h after light 81.9924 76.2824 87.7024 4 h after light 98.9169 97.4518 100.382 8 h after light 137.66750000000002 129.862 145.473 4 h after dark 117.1965 115.728 118.665 8 h after dark 97.8837 90.8884 104.879 12 h after dark 93.2606 85.8172 100.704