为什么单位根检验结果没有Breintung ~求助-经管之家官网！

导入excel 数据，建立pool，然后再pool中打开数据，所有序列一起做单位根，没有Breintung 这一项。单独检验F序列，发现还是没有。。。，下面是黏贴了F序列的单位根结果。（如果不用pool，设置面板数据的的话，单位根检验是panel unit root test，但是这里不能所有序列一起做单位根检验，不知道有没有能解决这个问题的方法）
Pool unit root test: Summary
Series: F
Date: 01/05/13 Time: 10:24
Sample: 1 630
Exogenous variables: Individual effects
Automatic selection of maximum lags
Automatic lag length selection based on SIC: 19
and Bartlett kernel
Balanced observations for each test

Cross-
Method Statistic Prob.** sections Obs
Null: Unit root (assumes common unit root process)
Levin, Lin & Chu t* 0.25487 0.6006 1 610

Null: Unit root (assumes individual unit root process)
Im, Pesaran and Shin W-stat -0.15081 0.4401 1 610
ADF - Fisher Chi-square 1.44364 0.4859 1 610
PP - Fisher Chi-square 164.010 0.0000 1 629

** Probabilities for Fisher tests are computed using an asymptotic Chi
-square distribution. All other tests assume asymptotic normality.
下面是f的时间序列值（截面30,20年）
Last updated: 04/30/13 - 21:54
Imported from 'C:\Documents and Settings\Administrator\桌面\时间序列小论文\test_ln.xls'
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