condition mean min max ZT0-3 418.35 418.35 418.35 ZT4-7 421.4 421.4 421.4 ZT8-11 498.1 498.1 498.1 ZT12-15 515.1 515.1 515.1 ZT16-19 585.3 585.3 585.3 ZT20-23 674.45 674.45 674.45