condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.064274 0.0 0.192822 9 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 3 h after dark 0.0 0.0 0.0 6 h after dark 0.064925 0.0 0.194775 9 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0