condition mean min max ZT0-3 0.034856238 0.0 0.069712476 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.06367107025 0.0 0.1273421405 ZT20-23 0.0977662685 0.0720550255 0.1234775115