用xtpedroni做面板数据协整检验的P值问题

Pedroni's cointegration tests:
No. of Panel units: 20       Regressors: 1
No. of obs.: 13680           Avg obs. per unit: 684
Data has been time-demeaned.

--------------------------------------
Test Stats.      Panel      Group
---------------+----------------------
v                    3.739          .
rho               -3.059      -2.76
t                   -2.194     -2.026
adf                -2.075     -1.729
--------------------------------------
All test statistics are distributed N(0,1), under a null        of        no        cointegration,
and diverge to negative infinity (save for panel v).


这是我的协整检验结果，可是怎么没有P值呢，看别人论文里都有P值才能判断是否有协整关系，求大神指点

怎么才能得到P值呢