condition mean min max ZT0-3 7906.099999999999 7906.099999999999 7906.099999999999 ZT4-7 6392.9 6392.9 6392.9 ZT8-11 6137.0 6137.0 6137.0 ZT12-15 5518.25 5518.25 5518.25 ZT16-19 6589.85 6589.85 6589.85 ZT20-23 7780.15 7780.15 7780.15