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 0.024619375 0.0 0.0984775 3 h after dark 0.08142266666666667 0.0 0.244268 6 h after dark 0.21103233333333335 0.0 0.633097 9 h after dark 0.08253866666666666 0.0 0.15789 12 h after dark 0.0 0.0 0.0