condition mean min max ZT0-3 0.09593066666666666 0.0 0.287792 ZT4-7 0.386093 0.386093 0.386093 ZT8-11 0.5284534999999999 0.5284534999999999 0.5284534999999999 ZT12-15 0.8864650000000001 0.0 1.7729300000000001 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0