condition mean min max ZT0-3 75.16158018499999 71.04781632 79.27534405 ZT4-7 31.256443540000003 30.194877015000003 32.318010065 ZT8-11 35.9967272975 31.515600740000004 40.477853855 ZT12-15 75.53443708750001 58.856936160000004 92.211938015 ZT16-19 87.2537067875 77.845766425 96.66164715 ZT20-23 119.05787515 114.79173085 123.32401945000001