condition mean min max 4 h after light 5079.92 4342.97 6043.81 8 h after light 6017.137777666667 4781.823333 7279.21 12 h after light 6513.131111 5437.183333 7424.263333 1.5 h after dark 16437.295556666668 12952.61 22817.04667 5.5 h after dark 8386.545555333334 6398.453333 10726.45 9.5 h after dark 8591.683333333332 8083.32 8995.39