condition mean min max ZT0-3 43.84131 43.84131 43.84131 ZT4-7 34.0123875 34.0123875 34.0123875 ZT8-11 38.4064245 38.4064245 38.4064245 ZT12-15 44.8484105 44.8484105 44.8484105 ZT16-19 53.5557105 53.5557105 53.5557105 ZT20-23 45.65554349999999 45.65554349999999 45.65554349999999