condition mean min max ZT0-3 0.20563383333333335 0.1464785 0.3200485 ZT4-7 0.0744165 0.0744165 0.0744165 ZT8-11 0.259902 0.259902 0.259902 ZT12-15 0.8963697500000001 0.8768305000000001 0.9159090000000001 ZT16-19 0.681133 0.681133 0.681133 ZT20-23 0.43877 0.43877 0.43877