DAILY INSOLATION
(Btu/hr/ft2) on a South-Facing
Roof for Various Angles with Horizontal
|
| 40o N Latitude |
| | 0o
| 30o
| 40o
| 50o
| 60o
| 90o
|
| Sept 21
| 1788
| 2210
| 2228
| 2182
| 2074
| 1416
|
| Oct 21
| 1348
| 1962
| 2060
| 2098
| 2074
| 7654
|
| Nov 21
| 942
| 1636
| 1778
| 1870
| 1908
| 1686
|
| Dec 21
| 782
| 1480
| 1634
| 1740
| 1796
| 1646
|
| Jan 21
| 948
| 1660
| 1810
| 1906
| 1944
| 1726
|
| Feb 21
| 1414
| 2060
| 2162
| 2202
| 2176
| 1730
|
| Mar 21
| 1852
| 2308
| 2330
| 2284
| 2174
| 1484
|
| Apr 21
| 2274
| 2412
| 2320
| 2168
| 1956
| 1022
|
| May 21
| 2552
| 2442
| 2264
| 2040
| 1760
| 724
|
| Jun 21
| 2648
| 2434
| 2224
| 1974
| 1670
| 610
|
| Jul 21
| 2534
| 2409
| 2230
| 2006
| 1728
| 702
|
| Aug 21
| 2244
| 2354
| 2258
| 2104
| 1894
| 978
|
|
| 48o N Latitude |
| | 0o
| 30o
| 40o
| 50o
| 60o
| 90o
|
| Sept 21
| 1522
| 2102
| 2118
| 2070
| 1966
| 1546
|
| Oct 21
| 1022
| 1774
| 1860
| 1890
| 1866
| 1626
|
| Nov 21
| 596
| 1336
| 1448
| 1518
| 1544
| 1442
|
| Dec 21
| 446
| 1136
| 1250
| 1326
| 1364
| 1304
|
| Jan 21
| 596
| 1360
| 1478
| 1550
| 1578
| 1478
|
| Feb 21
| 1080
| 1880
| 1972
| 2024
| 1978
| 1720
|
| Mar 21
| 1578
| 2208
| 2228
| 2182
| 2074
| 1632
|
| Apr 21
| 2106
| 2358
| 2266
| 2114
| 1902
| 1262
|
| May 21
| 2482
| 2418
| 2234
| 2010
| 1728
| 982
|
| Jun 21
| 2626
| 2420
| 2204
| 1950
| 1644
| 874
|
| Jul 21
| 2474
| 2386
| 2200
| 1974
| 1694
| 956
|
| Aug 21
| 2086
| 2300
| 2200
| 2046
| 1836
| 1208
|
-171-
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|
