Any help/ideas in analyzing some data for solar panels?

Posted on 2016-02-17 18:25:00 in Engineering by SEN

I have an experiment testing two very similar solar panels (created by the same company) with one independent variable: a new material that is used in one but not the other. 
I have placed one of each panel at 2 different locations, and have collected data over a 20 day period consisting of voltage, temperature, current, and power of each panel (4 total) every day. One is obviously better than the other but I need to do an extensive statistical analysis. I have already compared power vs. temperature and power over time. 

I integrated the power vs. time graph to get total work done for each panel and compared each day at each location for both panels, showing how much more work one did over the other. 
I also compared how the power of each panel correlated with the temperature and did a linear regression as well as correlation coefficient for each panel. Is there anything else that I could analyze with the data I have? Any other significant stat tests I could do, maybe some hypothesis tests? 

I have weather data (clouds, rain, etc.) and irradiance data as well.

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