condition mean min max 0 h after light 11.9892 10.0514 13.927 4 h after light 16.3653 15.946 16.7846 8 h after light 20.6714 20.0013 21.3415 4 h after dark 24.31555 24.2676 24.3635 8 h after dark 19.3373 17.1086 21.566 12 h after dark 14.499749999999999 14.0443 14.9552