condition mean min max ZT0-3 59.774899999999995 51.41115 64.1561 ZT4-7 49.0984 49.0984 49.0984 ZT8-11 46.67695 46.67695 46.67695 ZT12-15 67.1346 61.9564 72.3128 ZT16-19 83.1531 83.1531 83.1531 ZT20-23 82.91329999999999 82.91329999999999 82.91329999999999