condition mean min max ZT0-3 83.05 83.05 83.05 ZT4-7 95.9 95.9 95.9 ZT8-11 119.15 119.15 119.15 ZT12-15 104.9 104.9 104.9 ZT16-19 110.45 110.45 110.45 ZT20-23 83.65 83.65 83.65