condition mean min max ZT0-3 0.59883725 0.564444 0.6332305 ZT4-7 0.506818 0.506818 0.506818 ZT8-11 0.585495 0.585495 0.585495 ZT12-15 0 0 0 ZT16-19 1.287075 1.287075 1.287075 ZT20-23 1.196905 1.196905 1.196905