condition mean min max ZT0-3 110.07307844249999 109.242827885 110.903329 ZT4-7 19.237863238750002 12.1036440525 26.372082425000002 ZT8-11 22.8383212375 14.581927050000001 31.094715425 ZT12-15 35.1555412475 35.004536110000004 35.306546385 ZT16-19 45.1027059425 44.504807255 45.70060463 ZT20-23 48.930433837500004 47.598848095 50.26201958