National Solar Radiation Data Base

1961 - 1990

** Daily Statistics Files

The Daily Statisitcs Files (DSFs) are part of the National Solar Radiation Data Base. A description of the files and their format can be found in Section 3.3 of the National Solar Radiation Data Base User's Manual.

In short, the DSFs contain the average and standard deviation of the daily total solar energy (direct normal, diffuse horizontal, and global horizontal) for each station-year-month and each station-year for the years 1961-1990 for all 239 stations, where available. The 30-year averages and the standard deviations of monthly and annual means from 1961 through 1990 are also provided. For the meteorological elements, only monthly, annual, and 30-year averages were computed.

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Data Files*
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