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 0.0 0.0 0.0 3 h after dark 0.35840466666666665 0.165011 0.495056 6 h after dark 0.054806 0.0 0.164418 9 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0