condition mean min max ZT0-3 0.054933 0.054933 0.054933 ZT4-7 0.0 0.0 0.0 ZT8-11 0.00248981 0.00248981 0.00248981 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0