condition mean min max ZT0-3 29.0244 29.0244 29.0244 ZT4-7 18.38505 18.38505 18.38505 ZT8-11 28.5764 28.5764 28.5764 ZT12-15 25.80405 25.80405 25.80405 ZT16-19 43.7923 43.7923 43.7923 ZT20-23 35.8819 35.8819 35.8819