condition mean min max ZT0-3 0.34324626174999995 0.107552125 0.5789403984999999 ZT4-7 12.74647897 6.53910558 18.95385236 ZT8-11 49.257696655000004 38.463259065 60.052134245 ZT12-15 99.3198739525 90.96758940000001 107.672158505 ZT16-19 85.08228511749999 77.16336667 93.001203565 ZT20-23 74.22318916 71.39323877000001 77.05313955