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  1. Hello, everyone. After running a few simulations on several sites of the Brazilian soil, I realized that the Global incident in Coll. plane from the Loss diagram was very different on each simulation. Since all of my simulations have fixed sheds, not trackers, I started wondering why in some cases I got over 6% Gain on Global incident in Coll. plane and others I got only 0.3%. Even if I used the optimization tool for tilt and azimuth enhancement, the Global incident in Coll. plane would not change significantly. The only correlation I could find for this behavior was with the Latitude: The closer I get to a 0° Longitude, the smaller the Global incident in Coll. plane is. This trend is clearly shown in the following table and scatter plot: The column 'Gain' represents the Global incident in Coll. plane value taken from the simulation's Loss Diagram For a visual reference of where those simulated plants are located: Given all that explanation, I have some questions: Is my interpretation correct and the closer I get to a 0° Latitude the smaller the gain for Global incident is? Can you recommend me articles that explain this behavior, either on PVSyst or a more general sense? Why couldn't I get a significant enhancement of the Global incident in Coll. plane when I used the optimization tool (for tilt and azimuth)? I hope you can help me with those questions, and I'm available for further discussions. Best regards.
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