condition mean min max ZT0-3 158.6 158.6 158.6 ZT4-7 129.3 129.3 129.3 ZT8-11 149.15 149.15 149.15 ZT12-15 134.55 134.55 134.55 ZT16-19 163.25 163.25 163.25 ZT20-23 196.15 196.15 196.15