condition mean min max ZT0-3 115.1 115.1 115.1 ZT4-7 146.8 146.8 146.8 ZT8-11 136.95 136.95 136.95 ZT12-15 115.55 115.55 115.55 ZT16-19 125.3 125.3 125.3 ZT20-23 99.7 99.7 99.7