condition mean min max ZT0-3 0.128861 0.0 0.257722 ZT4-7 0.09161799999999999 0.09161799999999999 0.09161799999999999 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0673205 0.0 0.134641 ZT16-19 0.1056695 0.0 0.211339 ZT20-23 0 0 0