condition mean min max 0 h after light 20.0991 18.777 21.4212 4 h after light 23.08775 21.4501 24.7254 8 h after light 18.135150000000003 18.0576 18.2127 4 h after dark 17.13455 13.4777 20.7914 8 h after dark 22.2623 22.0861 22.4385 12 h after dark 23.976950000000002 23.0518 24.9021