condition mean min max ZT0-3 36.075450000000004 36.075450000000004 36.075450000000004 ZT4-7 25.6388 25.6388 25.6388 ZT8-11 21.93995 21.93995 21.93995 ZT12-15 26.4643 26.4643 26.4643 ZT16-19 32.13015 32.13015 32.13015 ZT20-23 37.8578 37.8578 37.8578