condition mean min max ZT0-3 74.35 74.35 74.35 ZT4-7 104.8 104.8 104.8 ZT8-11 102.0 102.0 102.0 ZT12-15 108.1 108.1 108.1 ZT16-19 90.8 90.8 90.8 ZT20-23 61.95 61.95 61.95