condition mean min max ZT0-3 772.4 772.4 772.4 ZT4-7 635.5 635.5 635.5 ZT8-11 640.1 640.1 640.1 ZT12-15 650.5999999999999 650.5999999999999 650.5999999999999 ZT16-19 574.05 574.05 574.05 ZT20-23 529.1 529.1 529.1