Using Radiation results on mesh to drive surface vertical divisions

Hey guys,

I’m somewhat newish to Grasshopper. I’m trying to create a concept for a building facade that is driven by radiation results on the face of my building and use this to drive Pufferfish’s parameter curve divide surface node and play around with a graph mapper to test things out. I get odd results as seen on the image, I would expect a pronounced variation between cooler and hotter areas and I’m not sure if my list structure is wrong. Would greatly appreciate your guidance and help on how to tackle this idea.

Thank you

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