condition mean min max 4 h after light 1274.6 1274.6 1274.6 8 h after light 1324.55 1226.0 1423.1 12 h after light 1297.1 1201.7 1392.5 4 h after dark 1219.15 1148.6 1289.7 8 h after dark 1330.1 1256.3 1403.9 12 h after dark 1470.4 1404.6 1536.2