condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.1663375 0.1663375 0.1663375 ZT12-15 0.03588775 0.0 0.0717755 ZT16-19 0.0295525 0.0295525 0.0295525 ZT20-23 0.0 0.0 0.0