Figure 5
From: Evaluation of Reanalysis Surface Incident Solar Radiation Data in China

Average monthly Rs scatter plots between reanalysis products (ERA-Interim and MERRA-2) and surface measurements (CMA and DAM) from 2000 to 2009. (The color code represents the dot density, and the dot density in the red area is higher than that in the blue area. Deseasonalized correlations in the lower right corner.).