condition mean min max ZT0-3 64.8671 64.8671 64.8671 ZT4-7 61.06415 61.06415 61.06415 ZT8-11 50.4549 50.4549 50.4549 ZT12-15 52.88735 52.88735 52.88735 ZT16-19 64.20599999999999 64.20599999999999 64.20599999999999 ZT20-23 78.62765 78.62765 78.62765