condition mean min max ZT0-3 0.040973666666666665 0.0 0.122921 ZT4-7 0.0 0.0 0.0 ZT8-11 0.1267195 0.1267195 0.1267195 ZT12-15 0.313955 0.2043795 0.4235305 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0