condition mean min max ZT0-3 0.00227493825 0.0 0.0045498765 ZT4-7 0.0119133625 0.0 0.023826725 ZT8-11 0.2675682855 0.11746218850000001 0.41767438250000005 ZT12-15 2.32448011425 1.1889913760000002 3.4599688525 ZT16-19 1.33055965875 1.09554167 1.5655776475 ZT20-23 0.406460526 0.2727343555 0.5401866965