condition mean min max ZT0-3 75.89629018166667 71.66677196333333 80.12580840000001 ZT4-7 73.87771359999999 72.26271507999999 75.49271212 ZT8-11 92.79602465833334 90.80384931333334 94.78820000333333 ZT12-15 106.71623890833334 96.81843824666667 116.61403957 ZT16-19 111.39119927666667 110.99287177333333 111.78952678 ZT20-23 103.40720525 102.9013054 103.91310510000001