condition mean min max 3 h after light 16.706233333333333 14.9321 18.3392 6 h after light 16.1492 14.9532 16.9117 9 h after light 17.654466666666668 16.3376 19.8426 12 h after light 18.44325 15.8102 20.1581 3 h after dark 23.1803 21.8829 23.9031 6 h after dark 22.893366666666665 20.2658 25.3441 9 h after dark 19.9784 18.6586 21.3551 12 h after dark 16.5432 15.9375 17.1489