condition mean min max ZT0-3 0.0453363125 0.0 0.090672625 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 0.015134629000000002 0.0 0.030269258000000004 ZT20-23 0.0 0.0 0.0