condition mean min max 2 h after light 0.0 0.0 0.0 6 h after light 0.0251745 0.0 0.151047 10 h after light 0.022970166666666667 0.0 0.137821 14 h after light 0.0 0.0 0.0 18 h after light 0.0 0.0 0.0 2 h after dark 0.0 0.0 0.0