condition mean min max ZT0-3 126.2 126.2 126.2 ZT4-7 136.8 136.8 136.8 ZT8-11 142.25 142.25 142.25 ZT12-15 135.5 135.5 135.5 ZT16-19 112.7 112.7 112.7 ZT20-23 147.1 147.1 147.1