condition mean min max 4 h after light 941.0 941.0 941.0 8 h after light 1057.95 1005.7 1110.2 12 h after light 1178.4 1127.1 1229.7 4 h after dark 1286.75 1171.9 1401.6 8 h after dark 1513.8000000000002 1511.2 1516.4 12 h after dark 1529.8000000000002 1497.7 1561.9