condition mean min max ZT0-3 0.006453916666666667 0.0 0.01936175 ZT4-7 0.054639599999999997 0.054639599999999997 0.054639599999999997 ZT8-11 0.0187321 0.0187321 0.0187321 ZT12-15 0.059653925 0.0389765 0.08033135 ZT16-19 0.0174333 0.0174333 0.0174333 ZT20-23 0.0204015 0.0204015 0.0204015