condition mean min max ZT0-3 1481.35 1481.35 1481.35 ZT4-7 1510.9 1510.9 1510.9 ZT8-11 1507.75 1507.75 1507.75 ZT12-15 1432.4 1432.4 1432.4 ZT16-19 1560.2 1560.2 1560.2 ZT20-23 1528.1999999999998 1528.1999999999998 1528.1999999999998