condition mean min max 0 h after light 6.173985 6.01701 6.33096 4 h after light 8.2884 7.77401 8.80279 8 h after light 8.970085000000001 8.19075 9.74942 4 h after dark 1.6762299999999999 1.12043 2.23203 8 h after dark 3.9291150000000004 2.90204 4.95619 12 h after dark 6.72758 6.16034 7.29482