condition mean min max 4 h after light 1288.678889 1162.6 1390.536667 8 h after light 1158.1877776666668 1090.283333 1230.98 12 h after light 1024.4855556666666 950.82 1159.006667 1.5 h after dark 1081.4255553333335 948.45 1188.813333 5.5 h after dark 1240.628889 1078.483333 1369.616667 9.5 h after dark 1194.6588889 983.6866667 1462.64