condition mean min max ZT0-3 626.1 626.1 626.1 ZT4-7 372.4 372.4 372.4 ZT8-11 375.2 375.2 375.2 ZT12-15 449.0 449.0 449.0 ZT16-19 539.05 539.05 539.05 ZT20-23 518.9 518.9 518.9