condition mean min max ZT0-3 635.05 635.05 635.05 ZT4-7 606.4 606.4 606.4 ZT8-11 640.25 640.25 640.25 ZT12-15 655.3 655.3 655.3 ZT16-19 556.75 556.75 556.75 ZT20-23 671.2 671.2 671.2