Mean

S.d.

Skewness

Kurtosis (E_k)

ADF (p)

KPSS (p)

Shanghai Port

663

161.14

0.099

−1.22

−2.171 (0.5059)

1.553 (0.01)

Singapore Port

1019

134.38

0.164

−0.58

−2.684 (0.2985)

0.889 (0.01)