condition mean min max 0 h after light 12.77695 12.3286 13.2253 4 h after light 11.9689 11.8858 12.052 8 h after light 10.10586 9.77672 10.435 4 h after dark 9.556075 8.74675 10.3654 8 h after dark 11.475950000000001 11.2478 11.7041 12 h after dark 11.5509 11.1262 11.9756