Annual Average Precipitation 1961-1990 USDA/NRCS

Vector dataset provides derived average annual precipitation according to a model using point precipitation and elevation data for the 30-year period of 1961-1990.矢量数据集（Vector dataset）基于采用点降水数据与高程数据的模型，提供了1961-1990年三十年周期内的衍生年平均降水量数据。