condition mean min max ZT0-3 35.699875289999994 34.2058829 37.19386768 ZT4-7 32.421147160000004 27.452373065 37.389921255000004 ZT8-11 59.6678569225 48.78277699 70.552936855 ZT12-15 35.3056826275 22.79467147 47.816693785 ZT16-19 17.569577047499997 16.522985894999998 18.6161682 ZT20-23 17.13066449 16.11197498 18.149354