condition mean min max ZT0-3 0.347118 0.347118 0.347118 ZT4-7 0.0 0.0 0.0 ZT8-11 0.093467 0.093467 0.093467 ZT12-15 0.645295 0.645295 0.645295 ZT16-19 0.6015355 0.6015355 0.6015355 ZT20-23 1.044721 1.044721 1.044721