condition mean min max 4 h after light 9.43001 9.29472 9.5535 8 h after light 9.560333333333334 9.422 9.719560000000001 12 h after light 9.74606 9.63541 9.82108 4 h after dark 10.131653333333333 10.09882 10.18085 8 h after dark 9.60664 9.49467 9.67675 12 h after dark 9.556793333333333 9.383939999999999 9.7732