condition mean min max ZT0-3 0.313763275 0.29804905 0.3294775 ZT4-7 0.4107885 0.4107885 0.4107885 ZT8-11 0.8592035 0.8592035 0.8592035 ZT12-15 0 0 0 ZT16-19 0.9144855 0.9144855 0.9144855 ZT20-23 0.6988525000000001 0.6988525000000001 0.6988525000000001