condition mean min max 4 h after light 7.968581 7.871028999999999 8.128906 8 h after light 7.736031666666667 5.540952 9.310724 12 h after light 12.278306666666666 9.48811 15.061329999999998 16 h after light 16.54401 15.73519 17.163439999999998 4 h after dark 15.767023333333333 14.7747 17.23947 8 h after dark 18.996989999999997 10.35902 34.46695