How to compute total radiation on a surface from reflected solar rays?

Dear Ladybug community,

I have been working on a research project about solar glare problem in urban centers. I have been trying to use the ladybug tool components like the “bounce from surface” to get cumulative reflected solar rays.
So far I can see the reflected solar rays on the 3D urban context model. Now I wanted to illustrate the amount of solar reflection with graphic.value_colors in kWh/m2 unit, just like shown in the example picture attached.

I require your help more than ever in order to finish my project. Thank you in advance.

The files are attached below (406.1 KB) Site_Map GH.3dm (296.7 KB)