condition mean min max ZT0-3 412.7 412.7 412.7 ZT4-7 505.6 505.6 505.6 ZT8-11 581.45 581.45 581.45 ZT12-15 725.55 725.55 725.55 ZT16-19 627.3 627.3 627.3 ZT20-23 529.55 529.55 529.55