condition mean min max ZT0-3 62.240544564749996 27.8005441595 96.68054497 ZT4-7 10.095706370499999 8.426287731999999 11.765125008999998 ZT8-11 22.1973137825 16.780297125 27.61433044 ZT12-15 56.5279470525 46.883005319999995 66.172888785 ZT16-19 74.383811515 69.93917199500001 78.828451035 ZT20-23 82.0003636975 79.043093715 84.95763368