condition mean min max 4 h after light 6.351913333333334 3.78553 8.00186 8 h after light 6.81215 1.97257 11.3814 12 h after light 8.07604 4.52018 11.8459 4 h after dark 10.936653333333332 7.68856 12.635 8 h after dark 9.809496666666666 7.42105 12.149 12 h after dark 8.76689 8.40862 9.2294