condition mean min max ZT0-3 433.1 433.1 433.1 ZT4-7 447.3 447.3 447.3 ZT8-11 364.5 364.5 364.5 ZT12-15 364.45000000000005 364.45000000000005 364.45000000000005 ZT16-19 347.75 347.75 347.75 ZT20-23 319.05 319.05 319.05