condition mean min max ZT0-3 0.09568879999999999 0.0279391 0.14543499999999998 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.01435635 0.0 0.0287127 ZT16-19 0.08244395 0.08244395 0.08244395 ZT20-23 0.0313693 0.0313693 0.0313693