condition mean min max ZT0-3 755.4 755.4 755.4 ZT4-7 576.6 576.6 576.6 ZT8-11 568.3499999999999 568.3499999999999 568.3499999999999 ZT12-15 613.35 613.35 613.35 ZT16-19 713.6 713.6 713.6 ZT20-23 748.8 748.8 748.8