condition mean min max ZT0-3 42.0592 35.658 47.849549999999994 ZT4-7 40.102549999999994 40.102549999999994 40.102549999999994 ZT8-11 44.33945 44.33945 44.33945 ZT12-15 108.841175 90.51935 127.16300000000001 ZT16-19 86.65655 86.65655 86.65655 ZT20-23 74.48935 74.48935 74.48935