condition mean min max ZT0-3 656.8 656.8 656.8 ZT4-7 770.9 770.9 770.9 ZT8-11 790.0 790.0 790.0 ZT12-15 799.45 799.45 799.45 ZT16-19 835.3 835.3 835.3 ZT20-23 710.95 710.95 710.95