<P> The solar constant is a flux density measuring mean solar electromagnetic radiation (solar irradiance) per unit area . It is measured on a surface perpendicular to the rays, one astronomical unit (AU) from the Sun (roughly the distance from the Sun to the Earth). </P> <P> The solar constant includes all types of solar radiation, not just the visible light . It is measured by satellite as being 1.361 kilo watts per square meter (kW / m2) at solar minimum and approximately 0.1% greater (roughly 1.362 kW / m2) at solar maximum . </P>

What is the solar constant and would it be greater in maine or in florida
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