condition mean min max ZT0-3 1905.1999999999998 1905.1999999999998 1905.1999999999998 ZT4-7 976.2 976.2 976.2 ZT8-11 1173.35 1173.35 1173.35 ZT12-15 1416.5 1416.5 1416.5 ZT16-19 2169.0 2169.0 2169.0 ZT20-23 2343.35 2343.35 2343.35