condition mean min max 3 h after light 10.644870000000001 9.66741 11.1723 6 h after light 10.88426 8.51578 12.8774 9 h after light 10.52058 9.30644 11.4059 12 h after light 13.729166666666666 11.4018 16.3563 3 h after dark 17.5081 14.3208 20.5917 6 h after dark 21.0568 20.0803 22.2903 9 h after dark 19.630566666666667 18.1518 21.5416 12 h after dark 16.108933333333333 12.3984 20.3853