condition mean min max ZT0-3 1053.3 1053.3 1053.3 ZT4-7 768.8 768.8 768.8 ZT8-11 605.95 605.95 605.95 ZT12-15 739.35 739.35 739.35 ZT16-19 850.25 850.25 850.25 ZT20-23 977.1 977.1 977.1