condition mean min max ZT0-3 100.95739999999999 77.6257 118.056 ZT4-7 59.9727 59.9727 59.9727 ZT8-11 28.32145 28.32145 28.32145 ZT12-15 10.4031875 10.39595 10.410425 ZT16-19 10.60333 10.60333 10.60333 ZT20-23 34.149249999999995 34.149249999999995 34.149249999999995