Y,X1,X4一阶单整，我对其进行Johansen协整检验，得到如下结果

Unrestricted Cointegration Rank Test (Trace)   
   
Hypothesized  Trace 0.05
No. of CE(s) Eigenvalue Statistic Critical Value Prob.**
   
None  0.465000  28.71481  42.91525  0.5792
At most 1  0.234463  11.82663  25.87211  0.8238
At most 2  0.157048  4.612833  12.51798  0.6526
   
Trace test indicates no cointegration at the 0.05 level   
* denotes rejection of the hypothesis at the 0.05 level   
**MacKinnon-Haug-Michelis (1999) p-values   

这是说没有协整方程吗？为什么呢？或者接下来怎么办？