condition mean min max ZT0-3 1453.85 1453.85 1453.85 ZT4-7 1186.8 1186.8 1186.8 ZT8-11 1165.8 1165.8 1165.8 ZT12-15 1471.6 1471.6 1471.6 ZT16-19 1680.1 1680.1 1680.1 ZT20-23 1449.4499999999998 1449.4499999999998 1449.4499999999998