condition mean min max ZT0-3 115.09984 115.09984 115.09984 ZT4-7 110.38417799999999 110.38417799999999 110.38417799999999 ZT8-11 105.078577 105.078577 105.078577 ZT12-15 130.6573105 130.6573105 130.6573105 ZT16-19 104.9297005 104.9297005 104.9297005 ZT20-23 84.294932 84.294932 84.294932