标准偏差不精确：更多信息参见补充资料的Standard deviation warnings一节。
Standard deviation inaccurate: See the Standard deviation warnings section in the article supplement for details.
基于径流过程不确定性、不精确性的特点，利用资料系列的均方差方法把径流序列分为不同的状态。
Based on the uncertainty and inaccuracy characteristics, runoff series could be divided into different states via mean square deviation method of data series.
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