condition mean min max 2 h after light 0.0 0.0 0.0 6 h after light 0.040103 0.0 0.240618 10 h after light 0.02474483333333333 0.0 0.148469 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