condition mean min max ZT0-3 112.98577019999999 109.2842435 116.68729689999999 ZT4-7 89.41934336999999 74.81632444499999 104.022362295 ZT8-11 71.1727876675 61.45302318 80.892552155 ZT12-15 128.6710796525 121.827735905 135.5144234 ZT16-19 171.757420475 150.31700465 193.1978363 ZT20-23 275.31776267500004 219.6091283 331.02639705