condition mean min max ZT0-3 0.8220075 0.7719879999999999 0.872027 ZT4-7 1.082067 1.082067 1.082067 ZT8-11 0.843385 0.843385 0.843385 ZT12-15 0 0 0 ZT16-19 1.178935 1.178935 1.178935 ZT20-23 0.980369 0.980369 0.980369