condition mean min max 0 h after light 61.3554 55.5729 67.1379 2 h after light 8.463915 5.85263 11.0752 4 h after light 21.2919 19.715 22.8688 8 h after light 12.43485 10.2866 14.5831 12 h after light 6.33606 5.6753 6.99682 2 h after dark 17.37065 13.9364 20.8049 4 h after dark 28.2331 23.7878 32.6784 8 h after dark 51.1362 48.4103 53.8621 12 h after dark 54.78505 52.0122 57.5579