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Estimation of Clear Sky Normal Irradiance over Northern Nigeria Atmosphere

Research Journal of Ecology and Environmental Sciences | Vol 1, Issue 2

Table 3. Range of standard deviation for all stations.

YearRange of rad_mbRange of rad_md
JAN1 .0 - 2.00.2 - 0.3
FEB1.5 - 3.50.3 - 0.6
MAR3.2 - 18.71.0 - 11.3
APR3.0 - 16.80.5 - 8.5
MAY1.5 - 23.20.1 - 11.5
JUN18.0 - 19.20.4 - 9.6
JUL0.7 - 16.40.1 - 8.3
AUG0.7 - 27.50.1 - 14.9
SEP0.6 - 22.00.1 - 11.1
OCT0.8 - 19.40.1 - 10.4
NOV1.0 - 7.00.2 - 0.9
DEC0.9 - 25.80.2 - 13.9
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