condition mean min max ZT0-3 4364.0 4364.0 4364.0 ZT4-7 3978.2 3978.2 3978.2 ZT8-11 3577.0 3577.0 3577.0 ZT12-15 3735.25 3735.25 3735.25 ZT16-19 4209.9 4209.9 4209.9 ZT20-23 4605.75 4605.75 4605.75