condition mean min max ZT0-3 153.05 153.05 153.05 ZT4-7 158.6 158.6 158.6 ZT8-11 164.95 164.95 164.95 ZT12-15 126.4 126.4 126.4 ZT16-19 179.7 179.7 179.7 ZT20-23 187.75 187.75 187.75