condition mean min max ZT0-3 31.799999999999997 31.799999999999997 31.799999999999997 ZT4-7 42.8 42.8 42.8 ZT8-11 45.95 45.95 45.95 ZT12-15 34.6 34.6 34.6 ZT16-19 18.75 18.75 18.75 ZT20-23 35.2 35.2 35.2