Example: Global Horizontal radiation value for San Francisco, USA
The chart above shows the scatter plot of all hourly data on all days of the month and the typical monthly trend.
Example: Heat map of the hourly Global Horizontal radiation on all days of the year for San Francisco, USA
Heat maps allow the intensity of values to be perceived through color palettes. These graphs are very helpful in seeing how magnitudes vary throughout the year.
Examples of daily graphs with different variables (from top left to bottom right): global horizontal radiation, global horizontal illuminance, zenith luminance, opaque sky cover