condition mean min max 0 h after light 2.1332899999999997 2.04986 2.21672 4 h after light 2.15212 1.17684 3.1274 8 h after light 2.6538649999999997 2.53051 2.77722 4 h after dark 2.769865 2.1771 3.36263 8 h after dark 2.36104 2.35113 2.37095 12 h after dark 1.9286400000000001 1.19202 2.66526