condition mean min max ZT0-3 0.5623007499999999 0.4860865 0.6385149999999999 ZT4-7 0.7041675000000001 0.7041675000000001 0.7041675000000001 ZT8-11 0.5934835 0.5934835 0.5934835 ZT12-15 0 0 0 ZT16-19 0.79671 0.79671 0.79671 ZT20-23 0.907144 0.907144 0.907144