latitude station
1.LATITUDE VARIATIONS AT THE TIENTSIN LATITUDE STATION(1962.0—1964.0)
2.Take Zanhuang County in the eastern part of Taihang Mountains,as an example, the author chose the data of the annual mean precipitation by the hydrometric station of this county and the meteorological stations nearby from 1971 to 2000 and the longitude, latitude and altitude of each station as the study objects. Using regression analysis, the author built the forms of the spatial predicted model of the annual precipitation and also determined the applicable altitude zone of each model through 3σ rule.
