condition mean min max ZT0-3 96.65 96.65 96.65 ZT4-7 110.4 110.4 110.4 ZT8-11 65.9 65.9 65.9 ZT12-15 72.95 72.95 72.95 ZT16-19 104.15 104.15 104.15 ZT20-23 108.85 108.85 108.85