condition mean min max ZT0-3 298.6 298.6 298.6 ZT4-7 186.0 186.0 186.0 ZT8-11 131.1 131.1 131.1 ZT12-15 157.35 157.35 157.35 ZT16-19 341.05 341.05 341.05 ZT20-23 305.95000000000005 305.95000000000005 305.95000000000005