condition mean min max ZT0-3 1846.75 1846.75 1846.75 ZT4-7 1925.3 1925.3 1925.3 ZT8-11 1321.5 1321.5 1321.5 ZT12-15 1119.2 1119.2 1119.2 ZT16-19 1455.4 1455.4 1455.4 ZT20-23 1872.65 1872.65 1872.65