condition mean min max ZT0-3 32.35 32.35 32.35 ZT4-7 11.5 11.5 11.5 ZT8-11 88.3 88.3 88.3 ZT12-15 75.75 75.75 75.75 ZT16-19 135.7 135.7 135.7 ZT20-23 147.65 147.65 147.65