condition mean min max 3 h after light 4.067316666666667 3.81446 4.26764 6 h after light 4.972296666666667 4.1882 5.70842 9 h after light 5.72413 4.86405 6.43815 12 h after light 6.58023 6.13233 6.87878 3 h after dark 9.765653333333333 8.09086 10.7691 6 h after dark 9.888943333333334 9.59469 10.3715 9 h after dark 7.73494 6.99976 8.89271 12 h after dark 5.11007 4.01794 6.55285