condition mean min max 4 h after light 6.01809 2.79331 8.09192 8 h after light 2.0082843333333336 0.691713 3.31217 12 h after light 1.4656799999999999 1.12906 2.05102 4 h after dark 3.8860433333333333 2.22913 4.83323 8 h after dark 4.4584399999999995 3.77564 5.22784 12 h after dark 5.064996666666667 3.38707 6.21045