condition mean min max ZT0-3 56.5775 50.334500000000006 64.5488 ZT4-7 59.342 59.342 59.342 ZT8-11 61.096599999999995 61.096599999999995 61.096599999999995 ZT12-15 84.29939999999999 73.88095 94.71785 ZT16-19 56.9774 56.9774 56.9774 ZT20-23 71.94745 71.94745 71.94745