https://profhorn.aos.wisc.edu/wxwise/radiation/sunangle.html

Choose the Latitude that is closest to Oklahoma to "lock" in the data point. Then, answer the following questions:

The watt/m2 is the recognized unit for the amount of energy being given off by/received from the sun. In December, how many w/m2 is Oklahoma receiving?
In June?
What is the w/m2 for March and September? Why are they the same?
What is the w/m2 given off by the sun? Does that change? Why/why not?
How can the differences in light received at the Earth's surface be explained?