condition mean min max ZT0-3 518.55 518.55 518.55 ZT4-7 543.3 543.3 543.3 ZT8-11 512.4 512.4 512.4 ZT12-15 547.85 547.85 547.85 ZT16-19 576.1 576.1 576.1 ZT20-23 447.5 447.5 447.5