condition mean min max ZT0-3 0.7697400000000001 0.48087 1.05861 ZT4-7 4.73837 4.73837 4.73837 ZT8-11 10.011804999999999 10.011804999999999 10.011804999999999 ZT12-15 0 0 0 ZT16-19 2.58821 2.58821 2.58821 ZT20-23 0.9568715 0.9568715 0.9568715