condition mean min max 4 h after light 1133.2 1133.2 1133.2 8 h after light 1371.45 1368.7 1374.2 12 h after light 1425.55 1330.8 1520.3 4 h after dark 1265.25 1254.2 1276.3 8 h after dark 1274.25 1031.4 1517.1 12 h after dark 1223.9 1057.1 1390.7