condition mean min max ZT0-3 0.028718666666666667 0.0 0.086156 ZT4-7 0.02800185 0.02800185 0.02800185 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.02989255 0.02989255 0.02989255