condition mean min max ZT0-3 0.358032 0.358032 0.358032 ZT4-7 0.6015035 0.6015035 0.6015035 ZT8-11 0.6313040000000001 0.6313040000000001 0.6313040000000001 ZT12-15 0.7216374999999999 0.7216374999999999 0.7216374999999999 ZT16-19 0.7884645 0.7884645 0.7884645 ZT20-23 0.5068805000000001 0.5068805000000001 0.5068805000000001