condition mean min max ZT0-3 426.1 426.1 426.1 ZT4-7 700.0 700.0 700.0 ZT8-11 700.8 700.8 700.8 ZT12-15 516.5 516.5 516.5 ZT16-19 459.6 459.6 459.6 ZT20-23 547.45 547.45 547.45