condition mean min max ZT0-3 0.9405212500000001 0.8650795 1.0159630000000002 ZT4-7 0.748099 0.748099 0.748099 ZT8-11 1.24163 1.24163 1.24163 ZT12-15 0 0 0 ZT16-19 1.5782824999999998 1.5782824999999998 1.5782824999999998 ZT20-23 0.8546885 0.8546885 0.8546885