condition mean min max ZT0-3 0.8737604999999999 0.8737604999999999 0.8737604999999999 ZT4-7 0.7148924999999999 0.7148924999999999 0.7148924999999999 ZT8-11 1.7423899999999999 1.7423899999999999 1.7423899999999999 ZT12-15 2.139075 2.139075 2.139075 ZT16-19 2.992835 2.992835 2.992835 ZT20-23 1.05176 1.05176 1.05176