condition mean min max ZT0-3 364.05825 326.1975 401.919 ZT4-7 249.8635 249.8635 249.8635 ZT8-11 115.9925 115.9925 115.9925 ZT12-15 0 0 0 ZT16-19 18.189899999999998 18.189899999999998 18.189899999999998 ZT20-23 132.0685 132.0685 132.0685