From: Estimation of solar radiation from cloud cover data of Bangladesh
Model type | Model equations | Goodness of fit (R ^{2}) |
---|---|---|
Linear | \((1-S/S_0) = 0.6034C + 0.1739\) | 0.7402 |
Qudratic | \((1-S/S_0) = 0.4548C^2 + 0.1851C + 0.2385\) | 0.7578 |
Third degree | \((1-S/S_0) = -0.0855C^3 + 0.5721C^2 + 0.1409C + 0.2424\) | 0.7578 |
Fourth degree | \((1-S/S_0) = -2.6566C^4 + 4.8588C^3 - 2.4378C^2 +0.7996C + 0.2039\) | 0.7597 |
Fifth degree | \((1-S/S_0) = 0.273C^5 - 3.2931C^4 + 5.3912C^3 -2.6292C^2 + 0.8272C + 0.2028\) | 0.7597 |