condition mean min max ZT0-3 0.04580475 0.0 0.0916095 ZT4-7 0.090322 0.090322 0.090322 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.090224 0.090224 0.090224