condition mean min max ZT0-3 146.1625 146.1625 146.1625 ZT4-7 111.47045 111.47045 111.47045 ZT8-11 104.12889999999999 104.12889999999999 104.12889999999999 ZT12-15 99.834 99.834 99.834 ZT16-19 165.6935 165.6935 165.6935 ZT20-23 171.82 171.82 171.82