condition mean min max ZT0-3 43.1541 43.1541 43.1541 ZT4-7 35.734049999999996 35.734049999999996 35.734049999999996 ZT8-11 32.483 32.483 32.483 ZT12-15 33.2907 33.2907 33.2907 ZT16-19 38.51545 38.51545 38.51545 ZT20-23 44.21315 44.21315 44.21315