condition mean min max ZT0-3 36.65 36.65 36.65 ZT4-7 25.8 25.8 25.8 ZT8-11 36.8 36.8 36.8 ZT12-15 45.45 45.45 45.45 ZT16-19 29.0 29.0 29.0 ZT20-23 33.95 33.95 33.95