condition mean min max ZT0-3 72.23444444333333 72.23444444333333 72.23444444333333 ZT4-7 89.24388889 89.24388889 89.24388889 ZT8-11 95.87388889 95.87388889 95.87388889 ZT12-15 82.58555555666666 82.58555555666666 82.58555555666666 ZT16-19 82.15 82.15 82.15 ZT20-23 101.43777779 101.43777779 101.43777779