condition mean min max ZT0-3 0.0020236855 0.0 0.004047371 ZT4-7 0.01256386125 0.0060799455 0.019047777000000002 ZT8-11 0.008126903750000001 0.0073526375 0.00890117 ZT12-15 0.00441145975 0.0 0.0088229195 ZT16-19 0.0107771895 0.0 0.021554379 ZT20-23 0.0076193039999999995 0.0 0.015238607999999999