condition mean min max ZT0-3 4841.1 4841.1 4841.1 ZT4-7 3426.9 3426.9 3426.9 ZT8-11 3094.25 3094.25 3094.25 ZT12-15 3019.55 3019.55 3019.55 ZT16-19 4204.3 4204.3 4204.3 ZT20-23 4327.8 4327.8 4327.8