condition mean min max ZT0-3 0.19000132275000003 0.042693915 0.33730873050000004 ZT4-7 1.537744055 1.042180735 2.033307375 ZT8-11 2.1895098915 2.050222927 2.3287968560000003 ZT12-15 2.3834678040000004 2.298718227 2.468217381 ZT16-19 1.937484761 1.7839914095 2.0909781125 ZT20-23 2.79593221925 2.740128754 2.8517356845