condition mean min max ZT0-3 0.87544433625 0.7601595505 0.9907291220000001 ZT4-7 0.099104645 0.08785898800000001 0.110350302 ZT8-11 8.78454896075 0.8513501904999999 16.717747731 ZT12-15 25.740573292499995 23.84911223 27.632034354999995 ZT16-19 13.815496978999999 10.4522171595 17.1787767985 ZT20-23 2.55612488375 1.498330891 3.6139188764999997