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QUESTION
the common chart with the green.blue, red, yellow lines for solar insulation- what does the shape of each line mean and what does it mean in regards...
the common chart with the green.blue, red, yellow lines for solar insulation- what does the shape of each line mean and what does it mean in regards to lat, sun angle, day length, season and climate. The yellow line is the peak line and the blue line is reasonably flat.
