condition mean min max 4 h after light 1.4033799999999998 1.14954 1.65722 8 h after light 1.205625 1.18032 1.23093 12 h after light 1.41521 1.22383 1.60659 4 h after dark 1.2440496666666667 0.832899 1.53885 8 h after dark 1.2246463333333333 0.971559 1.44134 12 h after dark 1.49005 1.19072 1.74727