condition mean min max ZT0-3 558.65 558.65 558.65 ZT4-7 424.7 424.7 424.7 ZT8-11 460.0 460.0 460.0 ZT12-15 540.05 540.05 540.05 ZT16-19 559.4 559.4 559.4 ZT20-23 573.0 573.0 573.0