condition mean min max ZT0-3 555.2 555.2 555.2 ZT4-7 615.0 615.0 615.0 ZT8-11 601.6 601.6 601.6 ZT12-15 648.6 648.6 648.6 ZT16-19 543.05 543.05 543.05 ZT20-23 626.15 626.15 626.15