condition mean min max ZT0-3 1808.35 1808.35 1808.35 ZT4-7 1790.1 1790.1 1790.1 ZT8-11 1697.7 1697.7 1697.7 ZT12-15 1774.35 1774.35 1774.35 ZT16-19 1991.05 1991.05 1991.05 ZT20-23 1782.6 1782.6 1782.6