condition mean min max ZT0-3 1816.4 1816.4 1816.4 ZT4-7 2297.2 2297.2 2297.2 ZT8-11 2356.0 2356.0 2356.0 ZT12-15 2488.2 2488.2 2488.2 ZT16-19 2682.2 2682.2 2682.2 ZT20-23 2159.05 2159.05 2159.05