condition mean min max ZT0-3 0.049466977999999995 0.041596815 0.057337140999999994 ZT4-7 0.00793623575 0.0 0.0158724715 ZT8-11 2.30746721725 0.33188706100000004 4.2830473735000005 ZT12-15 9.64495594125 7.7358096865 11.554102196 ZT16-19 3.7505321234999998 2.9036207679999997 4.597443479 ZT20-23 0.6419789392499999 0.336576612 0.9473812665