condition mean min max ZT0-3 380.39574874249996 128.147012585 632.6444849 ZT4-7 17.68312348 14.40824315 20.95800381 ZT8-11 23.287734415 19.37596062 27.199508209999998 ZT12-15 18.2196259925 14.474666665 21.96458532 ZT16-19 18.2708722875 17.975730130000002 18.566014445 ZT20-23 23.8447155325 23.284008725 24.40542234