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[EnergyPlus_Support] A question



Greetings,

To find the direct normal solar radiation for College Station, TX, I went to the following web site:

http://www.eere.energy.gov/buildings/energyplus/cfm/weather_data.cfm

Then, I chose the country, the state, the city then clicked on the Stat tab and get solar data. Here is what I got: 

Month

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

4311

4089

4543

4656

4756

3564

4865

4942

4264

2758

2725

4440

 

 I have two questions:
1. What are the units? The web site says Wh/m2 but it should be per a time basis. It looks like per day
but the wording of monthly average gives the impression per month.
2. The trend for the DNI does not seem to make much sense to me. How can June
be 3564 and Janurary be higher 4311.
Your input will be greatly appreciated.
Many thanks.
E. Tora



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