condition mean min max ZT0-3 1234.35 1234.35 1234.35 ZT4-7 1087.9 1087.9 1087.9 ZT8-11 1045.3 1045.3 1045.3 ZT12-15 1004.0 1004.0 1004.0 ZT16-19 994.65 994.65 994.65 ZT20-23 1137.9499999999998 1137.9499999999998 1137.9499999999998