condition mean min max ZT0-3 1770.35 1770.35 1770.35 ZT4-7 1847.2 1847.2 1847.2 ZT8-11 2023.25 2023.25 2023.25 ZT12-15 2247.35 2247.35 2247.35 ZT16-19 2203.3 2203.3 2203.3 ZT20-23 1814.2 1814.2 1814.2