concentration	density	组1	组2	组3	组4	组5
0	20.00 	10.44 	11.91 	13.51 	10.82 	11.59 
0	40.00 	18.95 	16.58 	19.08 	15.36 	19.65 
0	60.00 	29.96 	23.05 	25.54 	28.55 	31.05 
0	80.00 	25.42 	30.41 	38.20 	46.00 	43.40 
0	100.00 	38.03 	34.38 	49.00 	31.00 	47.00 
0	120.00 	49.04 	40.72 	44.37 	54.55 	51.79 
5	20.00 	6.98 	10.24 	11.63 	11.35 	9.35 
5	40.00 	10.56 	16.07 	16.35 	16.58 	16.34 
5	60.00 	15.43 	25.22 	17.99 	38.00 	31.00 
5	80.00 	25.10 	18.82 	19.46 	26.34 	25.21 
5	100.00 	24.20 	27.78 	25.36 	27.00 	21.14 
5	120.00 	29.71 	35.66 	38.55 	35.85 	34.21 
10	20.00 	9.68 	11.60 	13.78 	11.54 	12.16 
10	40.00 	17.12 	30.18 	18.34 	13.53 	20.32 
10	60.00 	23.92 	28.66 	24.62 	22.47 	21.57 
10	80.00 	25.99 	28.36 	28.43 	33.03 	26.18 
10	100.00 	27.34 	21.32 	24.52 	30.52 	34.00 
10	120.00 	28.10 	29.39 	26.50 	38.94 	43.03 
20	20.00 	4.74 	8.45 	9.35 	10.38 	9.57 
20	40.00 	13.51 	15.81 	15.49 	15.36 	15.69 
20	60.00 	17.09 	22.86 	15.62 	22.22 	20.68 
20	80.00 	20.74 	23.82 	24.26 	22.15 	23.56 
20	100.00 	27.34 	25.80 	30.35 	25.69 	26.98 
20	120.00 	31.50 	32.52 	28.75 	22.47 	32.21