condition mean min max ZT0-3 473.8 473.8 473.8 ZT4-7 701.5 701.5 701.5 ZT8-11 632.05 632.05 632.05 ZT12-15 655.2 655.2 655.2 ZT16-19 524.7 524.7 524.7 ZT20-23 418.85 418.85 418.85