condition mean min max 0 h after light 6.442775 5.87598 7.00957 4 h after light 6.99929 6.21286 7.78572 8 h after light 17.64585 17.2931 17.9986 4 h after dark 22.2018 19.965 24.4386 8 h after dark 12.722100000000001 11.1189 14.3253 12 h after dark 7.344365 7.08751 7.60122