condition mean min max ZT0-3 0.010981675 0.010981675 0.010981675 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.03153755 0.03153755 0.03153755 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0