condition mean min max ZT0-3 0.021013166666666666 0.0 0.0630395 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.06830800000000001 0.064785 0.071831 ZT16-19 0.0627695 0.0627695 0.0627695 ZT20-23 0.0 0.0 0.0