condition mean min max ZT0-3 0.79641675 0.77922 0.8136135 ZT4-7 0.787291 0.787291 0.787291 ZT8-11 1.052516 1.052516 1.052516 ZT12-15 0 0 0 ZT16-19 1.0588765 1.0588765 1.0588765 ZT20-23 1.138195 1.138195 1.138195