condition mean min max ZT0-3 0.0333031 0.0333031 0.0333031 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.02780805 0.02780805 0.02780805 ZT16-19 0.0 0.0 0.0 ZT20-23 0.00918255 0.00918255 0.00918255