Open Access
Table 1
Mean irradiance measured at a tilt angle of 45°, along the evaluated period. Mean and SD values were calculated from the five highest values of each month.
| Month | Mean irradiance/Wm−2 | ± SD |
|---|---|---|
| May 19 | 132 | 35 |
| June 19 | 43 | 10 |
| July 19 | 77 | 11 |
| Aug. 19 | 199 | 14 |
| Sept. 19 | 426 | 23 |
| Oct. 19 | 627 | 27 |
| Nov. 19 | 835 | 19 |
| Dec. 19 | 875 | 29 |
| Jan. 20 | 827 | 57 |
| Feb. 20 | 646 | 32 |
| Mar. 20 | 537 | 10 |
| Apr. 20 | 287 | 22 |
| May 20 | 134 | 16 |
| June 20 | 44 | 3 |
| July 20 | 108 | 29 |
| Aug. 20 | 290 | 41 |
| Sep. 20 | 465 | 28 |
| Oct. 20 | 701 | 26 |
| Nov. 20 | 745 | 36 |
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