condition mean min max ZT0-3 0.60166918 0.0 1.20333836 ZT4-7 0.054588680833333326 0.0 0.10917736166666665 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0