condition mean min max ZT0-3 1.00292125 0.8968985 1.108944 ZT4-7 0.706893 0.706893 0.706893 ZT8-11 0.3872965 0.3872965 0.3872965 ZT12-15 0 0 0 ZT16-19 0.660974 0.660974 0.660974 ZT20-23 0.538522 0.538522 0.538522