condition mean min max ZT0-3 97.6 97.6 97.6 ZT4-7 121.8 121.8 121.8 ZT8-11 59.55 59.55 59.55 ZT12-15 110.05 110.05 110.05 ZT16-19 81.6 81.6 81.6 ZT20-23 46.0 46.0 46.0