condition mean min max ZT0-3 35.4 35.4 35.4 ZT4-7 40.2 40.2 40.2 ZT8-11 9.35 9.35 9.35 ZT12-15 55.35 55.35 55.35 ZT16-19 80.85 80.85 80.85 ZT20-23 46.95 46.95 46.95