condition mean min max ZT0-3 0.0485276455 0.019659596 0.077395695 ZT4-7 0.37244666049999997 0.055735991500000005 0.6891573295 ZT8-11 3.59321741075 2.8640379185000002 4.322396903 ZT12-15 4.72572793525 3.9720518659999997 5.4794040045 ZT16-19 2.5809575149999997 2.4747564555 2.6871585744999997 ZT20-23 2.60779664425 2.4839635255 2.731629763