condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.019041005833333333 0.0 0.038082011666666665 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