condition mean min max ZT0-3 7209.9 7209.9 7209.9 ZT4-7 5988.6 5988.6 5988.6 ZT8-11 6495.7 6495.7 6495.7 ZT12-15 6940.549999999999 6940.549999999999 6940.549999999999 ZT16-19 7517.55 7517.55 7517.55 ZT20-23 8054.549999999999 8054.549999999999 8054.549999999999