condition mean min max ZT0-3 0.44610150000000004 0.44610150000000004 0.44610150000000004 ZT4-7 0.518841 0.518841 0.518841 ZT8-11 0.689928 0.689928 0.689928 ZT12-15 1.6580249999999999 1.6580249999999999 1.6580249999999999 ZT16-19 2.32547 2.32547 2.32547 ZT20-23 0.9533225 0.9533225 0.9533225