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If everything works right the plot you see here is the insolation at my location plotted from midnight local time till the present. When the sky is clear of clouds the insolation plot forms a nice bell shape curve over the day. Plots for past days that have data avaliable can be viewed by selecting a date below.

The blue plot is the sensor reading and the red plot is the calculated clear sky insolation for the same time and location. The insolation calculation is based on Dr David Brooks' web page. A Simple Insolation Model

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