Table 2. Data Elements in the NSRDB Hourly Data Files
(For all except the first record of each file)
Field
Position
ElementValuesDefinition
002 - 012
002 - 003
005 - 006
008 - 009
011 - 012
Local Standard Time
Year
Month
Day
Hour

61 - 90
1 - 12
1 - 31
1 - 24

Year of observation
Month of observation
Day of month
Hour of day in local standard time
014 - 017



Extraterrestrial Horizontal
Radiation


0 - 1415



Amount of solar radiation in Wh/m2 received on
a horizontal surface at the top of the atmosphere
during the 60 minutes preceding the hour
indicated.
019 - 022



Extraterrestrial Direct
Normal Radiation


0 - 1415



Amount of solar radiation in Wh/m2 received on
a surface normal to the sun at the top of the
atmosphere during the 60 minutes preceding the
hour indicated.
024 - 030
024 - 027
029
030
Global Horizontal Radiation
Data Value
Flag for Data Source
Flag for Data Uncertainty

0 - 1415
A - H, ?
0 - 9
Total amount of direct and diffuse solar
radiation in Wh/m2 received on a horizontal
surface during the 60 minutes preceding the
hour indicated.     9999 = missing data.
032 - 038
032 - 035
037
038
Direct Normal Radiation
Data Value
Flag for Data Source
Flag for Data Uncertainty

0 - 1415
A - H, ?
0 - 9
Amount of solar radiation in Wh/m2 received
within a 5.7o field of view centered on the sun,
during the 60 minutes preceding the hour
indicated.     9999 = missing data.
040 - 046
040 - 043
045
046

Diffuse Horizontal Radiation
Data Value
Flag for Data Source
Flag for Data Uncertainty


0 - 1415
A - H, ?
0 - 9

Amount of solar radiation in Wh/m2 received
from the sky (excluding the solar disk) on a
horizontal surface, during the 60 minutes
preceding the hour indicated.
9999 = missing data.
FORTRAN Format
(4(1X,I2),2(lX,I4),3(1X,I4,lX,Al,I1))


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