http://www.baihp.org/casestud/hdh_roof/images/energy_scatter.gif This is a scatter plot that demonstrates the energy saving capabilities of white metal roofs. The blue triangles represent readings of temperature and energy usage for white metal roofs and the red squares represent the same variables except for shingled roofs. You can see the linear trend of increased temperature that correlates to the same trend in increase energy usage but what is also clear is how much lower both the temperature and energy usage are for white roofs over the shingled roofs.
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