[EnergyPlus_Support] EPW weather files doubt

["Andy" <aebdesign2@xxxxxxxxxxx>]

Hi everyone, here goes my first post...:
Does anyone know how EPW files are put together?
I´ve heared one version but not sure if it´s correct and would 
appreciate a confirmation if at all possible, and it goes like this 
(applicable to US data(?)):
There are average data records over time for particular locations, 
these includes average min. temp., average max. temp., relative 
humidity, etc, etc. for the various months.  What´s done is 
a "typical" average month is found, from what ever year, that comes 
close to this averages, and the exact data that constitutes particular 
month is what goes into the EPW file.  And this way, the complete year 
is made, theoretically, including the info of 12 months in up to 12 
different years.  Is this so?  The alternative I guess could be 
creating a "synthetic" month (year rather) where the data is in fact 
the average of many different years.  
Anyone know?
Thanks so much for any comments!

Andy





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