condition mean min max 4 h after light 12.366339 11.957246 12.775432 8 h after light 15.0071325 11.189658 18.824607 12 h after light 16.274097 16.274097 16.274097 4 h after dark 23.284270999999997 22.641992 23.92655 8 h after dark 36.9121615 17.197382 56.626941 12 h after dark 10.090448 10.090448 10.090448