Statistical method for characteristic rules of mean deviation of regional solar altitude angles

The invention relates to a statistical method for characteristic rules of average deviation of regional solar altitude angles. The statistical method comprises the following three steps of preparing sample data, calculating the average deviation and inducing calculation results. A calculation method of the average deviation of the regional solar altitude angles is needed and comprises the following four steps of making a calculation plan, calculating the solar altitude angles, introducing weight rules and calculating the average deviation of the regional solar altitude angles. The method has the advantages that the characteristic rules of the average deviation of the regional solar altitude angles are summarized; the mathematical relationship between the average deviation of the regional solar altitude angles and regional diameter is nearly linear, the linear coefficient is 0.0019084-0.0019030 DEG.km and the regional diameter is a substantial correlation factor of the average deviation of the regional sol