. hadrilm smv（a var）：

Hadri (2000) panel unit root test for smv
with 3 observations on 4 cross-sectional units

eps       Z(mu)    P-value      Z(tau)    P-value

Homo       0.507     0.3059      -1.418     0.9219

Hetero     0.600     0.2744       3.989     0.0000

SerDep    11.180     0.0000      44.673     0.0000

H0: all 4 timeseries in the panel are stationary processes
Homo: homoskedastic disturbances across units
Hetero: heteroskedastic disturbances across units
SerDep: controlling for serial dependence in errors (lag trunc = 5)

上面检验结果中的z(mu)和z(tau)的含义是什么？

上面结果的意思能否简单说一下？