condition mean min max ZT0-3 0.03537146733333333 0.0 0.07074293466666666 ZT4-7 0.040577143499999996 0.016323306 0.064830981 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 0.0525898085 0.021296145 0.083883472