condition mean min max ZT0-3 408.35 408.35 408.35 ZT4-7 527.6 527.6 527.6 ZT8-11 586.15 586.15 586.15 ZT12-15 571.7 571.7 571.7 ZT16-19 479.9 479.9 479.9 ZT20-23 460.35 460.35 460.35