condition mean min max ZT0-3 11.5075 11.5075 11.5075 ZT4-7 11.3507 11.3507 11.3507 ZT8-11 14.52505 14.52505 14.52505 ZT12-15 11.8331 11.8331 11.8331 ZT16-19 15.48345 15.48345 15.48345 ZT20-23 10.7851 10.7851 10.7851