condition mean min max ZT0-3 0.9415201792500001 0.9095836890000001 0.9734566695000001 ZT4-7 0.1688438605 0.063320054 0.274367667 ZT8-11 0.6126593060000001 0.393235305 0.8320833070000001 ZT12-15 0.9121443359999999 0.8954782965 0.9288103754999999 ZT16-19 1.0945476417500002 0.89199513 1.2971001535000002 ZT20-23 0.933411707 0.8592397330000001 1.0075836809999998