condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0 0.0 0.0 9 h after light 0.0 0.0 0.0 12 h after light 0.016252325 0.0 0.0650093 3 h after dark 0.0 0.0 0.0 6 h after dark 0.048238 0.0 0.144714 9 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0