condition mean min max ZT0-3 47.3 47.3 47.3 ZT4-7 76.7 76.7 76.7 ZT8-11 35.85 35.85 35.85 ZT12-15 102.7 102.7 102.7 ZT16-19 96.9 96.9 96.9 ZT20-23 86.55 86.55 86.55