condition mean min max ZT0-3 0.018424 0.0 0.055272 ZT4-7 0.0 0.0 0.0 ZT8-11 0.02641125 0.02641125 0.02641125 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0256069 0.0256069 0.0256069 ZT20-23 0.0 0.0 0.0