condition mean min max ZT0-3 0.019949333333333333 0.0 0.059848 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.030009 0.0 0.060018 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0