condition mean min max ZT0-3 125.75 125.75 125.75 ZT4-7 34.1 34.1 34.1 ZT8-11 85.65 85.65 85.65 ZT12-15 75.8 75.8 75.8 ZT16-19 142.7 142.7 142.7 ZT20-23 146.25 146.25 146.25