condition mean min max ZT0-3 556.35 556.35 556.35 ZT4-7 220.4 220.4 220.4 ZT8-11 381.05 381.05 381.05 ZT12-15 352.6 352.6 352.6 ZT16-19 529.75 529.75 529.75 ZT20-23 596.15 596.15 596.15