condition mean min max ZT0-3 0.03411255 0.03411255 0.03411255 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.02348945 0.02348945 0.02348945 ZT16-19 0.0 0.0 0.0 ZT20-23 0.020396 0.020396 0.020396