中文说明：用三个月来预测后三个月的降雨量，以实现滚动预测，并对五年的降雨量进行了检验，发现精度较高，并可用于对未知年份降雨量的预测
English Description：
With three months to forecast rainfall in the three months, to implement rolling forecasts and five-year rainfall was tested and found higher accuracy, and can be used to predict the unknown year rainfall