condition mean min max ZT0-3 0.009922005666666667 0.0 0.019844011333333335 ZT4-7 0.0 0.0 0.0 ZT8-11 0.012412248166666667 0.0 0.024824496333333335 ZT12-15 0.009964415999999999 0.0 0.019928831999999997 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0