condition mean min max ZT0-3 1928.75 1928.75 1928.75 ZT4-7 4264.7 4264.7 4264.7 ZT8-11 3889.9 3889.9 3889.9 ZT12-15 3096.6000000000004 3096.6000000000004 3096.6000000000004 ZT16-19 2406.0 2406.0 2406.0 ZT20-23 1896.9 1896.9 1896.9