condition mean min max ZT0-3 97.55 97.55 97.55 ZT4-7 170.4 170.4 170.4 ZT8-11 121.65 121.65 121.65 ZT12-15 160.8 160.8 160.8 ZT16-19 134.05 134.05 134.05 ZT20-23 165.95 165.95 165.95