condition mean min max ZT0-3 78.6193 78.6193 78.6193 ZT4-7 56.91675 56.91675 56.91675 ZT8-11 45.3575 45.3575 45.3575 ZT12-15 62.60015 62.60015 62.60015 ZT16-19 86.79034999999999 86.79034999999999 86.79034999999999 ZT20-23 86.3706 86.3706 86.3706