condition mean min max ZT0-3 1.49999 1.49999 1.49999 ZT4-7 1.0445235 1.0445235 1.0445235 ZT8-11 1.0084945 1.0084945 1.0084945 ZT12-15 0.8720095 0.8720095 0.8720095 ZT16-19 1.219527 1.219527 1.219527 ZT20-23 1.186035 1.186035 1.186035