condition mean min max ZT0-3 0.01210948075 0.0 0.0242189615 ZT4-7 0.0 0.0 0.0 ZT8-11 0.009318985666666666 0.0 0.018637971333333333 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0079914645 0.0 0.015982929 ZT20-23 0.0 0.0 0.0