condition mean min max ZT0-3 29.686125 27.110599999999998 32.26165 ZT4-7 27.46935 27.46935 27.46935 ZT8-11 13.83695 13.83695 13.83695 ZT12-15 0 0 0 ZT16-19 8.185939999999999 8.185939999999999 8.185939999999999 ZT20-23 28.50655 28.50655 28.50655