condition mean min max ZT0-3 214.5 214.5 214.5 ZT4-7 116.6 116.6 116.6 ZT8-11 112.69999999999999 112.69999999999999 112.69999999999999 ZT12-15 91.45 91.45 91.45 ZT16-19 158.75 158.75 158.75 ZT20-23 151.45 151.45 151.45