condition mean min max 0 h after light 17.448 16.4744 18.4216 2 h after light 11.3113 11.2864 11.3362 4 h after light 8.128265 7.29296 8.96357 8 h after light 9.639605 8.89101 10.3882 12 h after light 19.89575 18.6811 21.1104 2 h after dark 20.71435 18.5592 22.8695 4 h after dark 18.135150000000003 16.963 19.3073 8 h after dark 26.06665 25.5937 26.5396 12 h after dark 17.3476 14.1819 20.5133