condition mean min max 3 h after light 15.700666666666667 11.9106 17.8032 6 h after light 15.219266666666666 12.6578 16.9375 9 h after light 17.749299999999998 15.9273 18.7406 12 h after light 22.384175 20.8467 25.1363 3 h after dark 35.12383333333333 32.1934 40.4824 6 h after dark 27.795 23.2702 30.3545 9 h after dark 21.8058 18.7437 26.3791 12 h after dark 18.315350000000002 17.3464 19.2843