condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0666435205 0.0 0.133287041 ZT8-11 0.0 0.0 0.0 ZT12-15 0.094436421 0.04215555266666667 0.14671728933333333 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0