condition mean min max ZT0-3 637.8 637.8 637.8 ZT4-7 473.5 473.5 473.5 ZT8-11 725.05 725.05 725.05 ZT12-15 705.3 705.3 705.3 ZT16-19 533.55 533.55 533.55 ZT20-23 696.9 696.9 696.9