condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.03786 0.0 0.11358 9 h after light 0.0 0.0 0.0 12 h after light 0.10833975 0.0 0.433359 3 h after dark 0.11136933333333333 0.0 0.334108 6 h after dark 0.16470200000000002 0.0 0.264645 9 h after dark 0.065041 0.0 0.195123 12 h after dark 0.1536055 0.0 0.307211