condition mean min max ZT0-3 1100.3 1100.3 1100.3 ZT4-7 621.4 621.4 621.4 ZT8-11 529.2 529.2 529.2 ZT12-15 652.85 652.85 652.85 ZT16-19 670.1 670.1 670.1 ZT20-23 832.75 832.75 832.75