condition mean min max ZT0-3 0.3616566666666667 0.0 1.08497 ZT4-7 8.8193 8.8193 8.8193 ZT8-11 901.1645 901.1645 901.1645 ZT12-15 24.11356 15.93027 32.29685 ZT16-19 17.000349999999997 17.000349999999997 17.000349999999997 ZT20-23 1.220345 1.220345 1.220345