condition mean min max ZT0-3 604.95 604.95 604.95 ZT4-7 547.6 547.6 547.6 ZT8-11 453.6 453.6 453.6 ZT12-15 501.65 501.65 501.65 ZT16-19 614.3 614.3 614.3 ZT20-23 615.8 615.8 615.8