Pool unit root test: Summary     
Series: ST_YL, ST_MN, ST_SY, ST_GM, ST_FH, ST_WW, ST_XXW, ST_XH   
Date: 03/04/10   Time: 19:49   
Sample: 2004 2008   
Exogenous variables: Individual effects   
Automatic selection of maximum lags   
Automatic lag length selection based on SIC: 0   
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* -3.41800  0.0003  8  32
   
Null: Unit root (assumes individual unit root process)     
Im, Pesaran and Shin W-stat  -0.28534  0.3877  8  32
ADF - Fisher Chi-square  14.2395  0.5809  8  32
PP - Fisher Chi-square  16.8390  0.3961  8  32
   
** Probabilities for Fisher tests are computed using an asymptotic Chi   
        -square distribution. All other tests assume asymptotic normality.