condition mean min max ZT0-3 0.1689755 0.1689755 0.1689755 ZT4-7 0.0 0.0 0.0 ZT8-11 0.23329 0.23329 0.23329 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0