condition mean min max ZT0-3 52.058757 52.058757 52.058757 ZT4-7 40.298041 40.298041 40.298041 ZT8-11 28.1664965 28.1664965 28.1664965 ZT12-15 34.4198755 34.4198755 34.4198755 ZT16-19 33.5119185 33.5119185 33.5119185 ZT20-23 46.8135965 46.8135965 46.8135965