condition mean min max ZT0-3 0.21000166666666667 0.0 0.630005 ZT4-7 0.0 0.0 0.0 ZT8-11 0.6940955 0.6940955 0.6940955 ZT12-15 1.5743325000000001 1.466795 1.68187 ZT16-19 0.0 0.0 0.0 ZT20-23 1.83181 1.83181 1.83181