condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.004050585 0.004050585 0.004050585 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0328684 0.0328684 0.0328684 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0