condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.014036612499999998 0.0 0.028073224999999997 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.024959405333333334 0.0 0.04991881066666667