condition mean min max ZT0-3 521.3 521.3 521.3 ZT4-7 783.4 783.4 783.4 ZT8-11 605.35 605.35 605.35 ZT12-15 536.3 536.3 536.3 ZT16-19 605.9000000000001 605.9000000000001 605.9000000000001 ZT20-23 665.65 665.65 665.65