condition mean min max ZT0-3 84.01429999999999 84.01429999999999 84.01429999999999 ZT4-7 56.2215 56.2215 56.2215 ZT8-11 52.383399999999995 52.383399999999995 52.383399999999995 ZT12-15 55.25555 55.25555 55.25555 ZT16-19 80.76495 80.76495 80.76495 ZT20-23 85.5849 85.5849 85.5849