condition mean min max ZT0-3 0.13700065 0.074694 0.19699044999999998 ZT4-7 0.603629 0.603629 0.603629 ZT8-11 0.8707860000000001 0.8707860000000001 0.8707860000000001 ZT12-15 2.349255 1.6515399999999998 3.04697 ZT16-19 1.3339794999999999 1.3339794999999999 1.3339794999999999 ZT20-23 0.544965 0.544965 0.544965