condition mean min max ZT0-3 1243.15 1243.15 1243.15 ZT4-7 1414.3 1414.3 1414.3 ZT8-11 1569.1999999999998 1569.1999999999998 1569.1999999999998 ZT12-15 1672.65 1672.65 1672.65 ZT16-19 1482.0 1482.0 1482.0 ZT20-23 1249.4 1249.4 1249.4