Trying to work through some simple solar energy calcs, but the terminology may be misleading me. One starts with finding the solar energy available at their location. If I understand correctly, let’s say “Fig 1” provides a table of “average cumulative daily solar radiation on a horizontal surface” which is broken down by month for various parts of the US. On a seemingly-related note, let’s say “Fig 2” shown as a map of the US divided by sections of equal values of “annual mean daily solar radiation in the US”.
Shouldn’t the total monthly averages (from Table 1) correspond to the annual average values (from Table 2) for the same area? …assuming both are expressed in the same units? Or, are they not really the same thing? (If not, why aren’t they the same thing)? Thanks, all!