Finally, variance analysis is used to verify the validity of the crytic model.

最后，利用方差期检验方法作了印证性讨论。

It is found that the natural runoffs in these two stations have the same crytic period analysis period of 42.7 years.

并在此基上，通过计算判定得到两个水文站的天序列都存在42.7年隐含期。