condition mean min max ZT0-3 194.71402168166668 163.97689671333333 225.45114665 ZT4-7 97.87950992 91.51373515 104.24528468999999 ZT8-11 106.58409527833334 91.29662185666666 121.8715687 ZT12-15 85.8949671 69.50303507666666 102.28689912333333 ZT16-19 82.44065154500001 75.12534895 89.75595414 ZT20-23 96.62759148333333 96.34408376666667 96.91109920000001