condition mean min max ZT0-3 0.028552966666666665 0.0 0.05710593333333333 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.013990250000000001 0.0 0.027980500000000002 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0