Month | Jan | Feb | Mar | April | May | Jun | Jul | Aug | Sept | Oct | Nov | Dec |
βopt (degree) | 32 | 23 | 17 | 0 | 0 | 0 | 0 | 0 | 3 | 17 | 30 | 34 |
Optimum Irradiance (kWh/m2/day) | 7.25 | 7.03 | 6.52 | 5.48 | 5.45 | 4.85 | 4.45 | 4.28 | 4.58 | 5.20 | 6.38 | 7.19 |
Irradiance for unique β (kWh/m2/day) | 6.71 | 6.65 | 6.49 | 5.35 | 5.40 | 4.72 | 4.35 | 4.22 | 4.58 | 5.13 | 5.93 | 6.51 |