The purpose of this study is to address the lack of time-series meteorological data in Inner Mongolia, China, and develop a more accurate forecasting model for photovoltaic power generation. We collected flux of solar radiation for December 2023 using a pyranometer, the solar radiation sensor installed in a site of Building 4 at Shonan Institute of Technology. This data was compared with solar irradiance data from the Tsujido Observatory of the Japan Meteorological Agency. The methods involve examining the correlation between the daily observed values and the meteorological agency's data. As a future task, we consider it a challenge to collect data for an extended period of approximately one year to account for seasonal variations.