我想做格兰杰因果检验的，先做ADF检验，弄出这样结果,能帮我读一下结果吗？

我这两天才学，我是按书（《EViews使用指南与案例》）上步骤弄出这样结果，但书上弄出结果表现形式和这不一样，不知道问题在那~我用的是eview5.0~从这怎么判断平稳性？希望高手们指点一下！

Null Hypothesis: Unit root (individual unit root process)     
Date: 05/27/09   Time: 12:10    
Sample: 1978 2007    
Series: WLC, GDP    
Exogenous variables: None    
User specified lags at: 1    
Total (balanced) observations: 56    
Cross-sections included: 2    
    
Method                               Statistic      Prob.**
ADF - Fisher Chi-square    0.04558    0.9997
ADF - Choi Z-stat               3.86960    0.9999
    
** Probabilities for Fisher tests are computed using an asympotic Chi    
        -square distribution. All other tests assume asymptotic    
        normality.    
    
Intermediate ADF test results U1    
    
    
Series Prob.  Lag     Max Lag         Obs
WLC  0.9997  1         1                   28
GDP  0.9777  1          1                  28