condition mean min max ZT0-3 518.25 518.25 518.25 ZT4-7 479.6 479.6 479.6 ZT8-11 439.7 439.7 439.7 ZT12-15 496.5 496.5 496.5 ZT16-19 649.7 649.7 649.7 ZT20-23 566.65 566.65 566.65