lag1	Null Hypothesis:	F-Statistic	Prob.	检验结果
	C1 does not Granger Cause Y	7.93672	0.0137	拒绝
	Y does not Granger Cause C1	0.06969	0.7956	不拒绝
	C2 does not Granger Cause Y	23.9282	0.0002	拒绝
	Y does not Granger Cause C2	3.17647	0.0964	拒绝
	C3 does not Granger Cause Y	24.2607	0.0002	拒绝
	Y does not Granger Cause C3	3.44115	0.0848	拒绝
lag2	C1 does not Granger Cause Y	2.49577	0.1277	拒绝
	Y does not Granger Cause C1	0.27746	0.7629	不拒绝
	C2 does not Granger Cause Y	7.75532	0.0079	拒绝
	Y does not Granger Cause C2	3.00659	0.0909	拒绝
	C3 does not Granger Cause Y	13.2611	0.0012	拒绝
	Y does not Granger Cause C3	3.7885	0.056	拒绝
lag3	C1 does not Granger Cause Y	1.34258	0.3274	拒绝
	Y does not Granger Cause C1	0.8112	0.5225	拒绝
	C2 does not Granger Cause Y	8.03378	0.0085	拒绝
	Y does not Granger Cause C2	0.798	0.5288	拒绝
	C3 does not Granger Cause Y	8.51001	0.0072	拒绝
	Y does not Granger Cause C3	0.86063	0.4997	拒绝
lag4	C1 does not Granger Cause Y	0.43103	0.7824	不拒绝
	Y does not Granger Cause C1	0.45872	0.7649	不拒绝
	C2 does not Granger Cause Y	6.58022	0.0316	拒绝
	Y does not Granger Cause C2	0.32897	0.8481	不拒绝
	C3 does not Granger Cause Y	18.3389	0.0034	拒绝
	Y does not Granger Cause C3	1.26975	0.3917	拒绝

做出来的结果是这样，但不知怎样分析，求救。。。。谢谢