condition mean min max ZT0-3 0.5126356524166666 0.11334078133333332 0.9119305234999999 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0073378695 0.0 0.014675739 ZT20-23 0.0 0.0 0.0