condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.4079688925 0.21218954350000002 0.6037482415000001 ZT8-11 2.98526958775 1.80574955 4.1647896255 ZT12-15 3.3681123035000002 2.8673448395 3.8688797675 ZT16-19 1.31518846125 0.7905653325 1.83981159 ZT20-23 0.27749973674999995 0.14289227599999998 0.41210719749999997