condition mean min max 4 h after light 10.081885 8.97707 11.1867 8 h after light 6.499205 6.49795 6.50046 12 h after light 5.3857800000000005 4.54128 6.23028 4 h after dark 8.58817 7.72327 9.45307 8 h after dark 8.49889 8.46658 8.5312 12 h after dark 10.58185 10.3129 10.8508