condition mean min max ZT0-3 10.07909 10.07909 10.07909 ZT4-7 4.005599999999999 4.005599999999999 4.005599999999999 ZT8-11 12.803049999999999 12.803049999999999 12.803049999999999 ZT12-15 15.014050000000001 15.014050000000001 15.014050000000001 ZT16-19 22.252 22.252 22.252 ZT20-23 13.78105 13.78105 13.78105