Using Global Navigation Satellite Systems (GNSS) observation data for developing a high-precision ionospheric Total Electron Content (TEC) model is one of the essential subjects in ionospheric physics research and the application of satellite navigation correction. In this study. we integrate the Empirical Orthogonal Function (EOF) method with the TEC data provided by the Center for O... https://trendingcustomes.shop/product-category/puzzle-acrylic-plaque/