condition mean min max ZT0-3 28.8 28.8 28.8 ZT4-7 24.9 24.9 24.9 ZT8-11 24.05 24.05 24.05 ZT12-15 24.9 24.9 24.9 ZT16-19 47.45 47.45 47.45 ZT20-23 29.049999999999997 29.049999999999997 29.049999999999997