condition mean min max ZT0-3 1.19302 1.071275 1.314765 ZT4-7 1.342635 1.342635 1.342635 ZT8-11 3.931165 3.931165 3.931165 ZT12-15 0 0 0 ZT16-19 2.895285 2.895285 2.895285 ZT20-23 1.32211 1.32211 1.32211