condition mean min max ZT0-3 183.462826 183.462826 183.462826 ZT4-7 108.07899900000001 108.07899900000001 108.07899900000001 ZT8-11 95.64002400000001 95.64002400000001 95.64002400000001 ZT12-15 102.354108 102.354108 102.354108 ZT16-19 71.04668000000001 71.04668000000001 71.04668000000001 ZT20-23 78.63703050000001 78.63703050000001 78.63703050000001