condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.6106745525 0.4093941275 0.8119549775 ZT8-11 0.8916464957500001 0.5605885135 1.222704478 ZT12-15 0.69129458725 0.519141416 0.8634477585 ZT16-19 0.23653245274999998 0.154495216 0.3185696895 ZT20-23 0.6507034844999999 0.437908667 0.863498302