condition mean min max ZT0-3 64.85 64.85 64.85 ZT4-7 140.3 140.3 140.3 ZT8-11 138.45 138.45 138.45 ZT12-15 108.6 108.6 108.6 ZT16-19 71.1 71.1 71.1 ZT20-23 77.05 77.05 77.05