condition mean min max ZT0-3 1804.2 1804.2 1804.2 ZT4-7 1912.7 1912.7 1912.7 ZT8-11 1894.6 1894.6 1894.6 ZT12-15 1681.1 1681.1 1681.1 ZT16-19 1396.4 1396.4 1396.4 ZT20-23 1569.0500000000002 1569.0500000000002 1569.0500000000002