condition mean min max ZT0-3 0.266356825 0.24289500000000003 0.28981865 ZT4-7 0.678074 0.678074 0.678074 ZT8-11 0.822016 0.822016 0.822016 ZT12-15 0 0 0 ZT16-19 0.1912722 0.1912722 0.1912722 ZT20-23 0.4315 0.4315 0.4315