condition mean min max ZT0-3 5113.75 5113.75 5113.75 ZT4-7 6699.9 6699.9 6699.9 ZT8-11 6091.85 6091.85 6091.85 ZT12-15 3593.75 3593.75 3593.75 ZT16-19 1687.35 1687.35 1687.35 ZT20-23 2233.0 2233.0 2233.0