condition mean min max 4 h after light 4.635584 3.0214950000000003 6.703823 8 h after light 4.218338666666667 2.362934 6.372643 12 h after light 4.225105 3.5709720000000003 5.09114 16 h after light 5.226503666666667 2.749098 8.386496000000001 4 h after dark 5.270462666666667 2.409375 10.15734 8 h after dark 7.752218999999999 2.912946 10.80942