condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.013900827999999999 0.0 0.027801655999999998 ZT8-11 0.008680300166666667 0.0 0.017360600333333333 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0