I have been asked the following:
What is the maximum and minimum noon Sun angles at 37 degrees N latitude for California? (for any date this month)
What is the minimum noon sun angle at 37 degrees N latitude for California ?(for any date this month use date above for both)
How does the intensity and duration of solar radiation change at this location throughout the year?
Works through the geometric relationship between latitude, season and sun angle in the sky.