condition mean min max ZT0-3 0.03400223433333333 0.0 0.06800446866666666 ZT4-7 0.020851241999999996 0.0 0.04170248399999999 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.037280814833333335 0.0 0.07456162966666667 ZT20-23 0.0 0.0 0.0