# Solar Ultraviolet Irradiance Characterization under All Sky Conditions in Burgos, Spain
## 4 Conclusions
\begin{table}
\begin{tabular}{l c c c c c c c c c c c c c c c} \hline \hline \multirow{2}{*}{**Monthaily**} & \multicolumn{6}{c}{**All Slains**} & \multicolumn{6}{c}{**Uncertainties**} & \multicolumn{6}{c}{**Uncertainties**} \\ \cline{2-13}  & \multicolumn{3}{c}{**Classified(\(k_{t}\),0.53)} & \multicolumn{3}{c}{**Classified(\(k_{t}\),0.53)} & \multicolumn{3}{c}{**Classified(\(k_{t}\),0.53)} \\ \cline{2-13}  & \multicolumn{3}{c}{**Classified(\(k_{t}\),0.53)} & \multicolumn{3}{c}{**GHUV(\(k_{t}\),0.53)} & \multicolumn{3}{c}{**GHUV(\(k_{t}\),0.53)} & \multicolumn{3}{c}{**GHUV(\(k_{t}\),0.53)} & \multicolumn{3}{c}{**ClEGRUV(\(k_{t}\),0.53)} & \multicolumn{3}{c}{**ClEGRUV(\(k_{t}\),0.53)} \\ \hline
**Value** & **SD** & **N** & **a** & **b** & **R\({}^{2}\)** & **a** & **R\({}^{2}\)** & **Value** & **SD** & **N** & **Value** & **SD** & **N** \\ \hline
**January** & 0.0078 & 0.0001 & 42 & 0.0271 & 1.2037 & 0.9853 & 0.0135 & 0.9897 & 0.0440 & 0.0003 & 19 & 0.0347 & 0.0018 & 24 & 0.0138 & 0.0027 & 19 \\
**January** & 0.0057 & 0.0001 & 56 & 0.0024 & 1.7535 & 0.9853 & 0.9894 & 0.0055 & 0.0005 & 14 & 0.0045 & 0.0015 & 36 & 0.0038 & 0.0007 & 19 \\
**March** & 0.0020 & 0.0004 & 0.0034 & 1.6457 & 0.9663 & 0.0025 & 0.0025 & 0.0025 & 0.0025 & 0.0025 & 31 & 0.0026 & 0.0024 & 31 & 0.0025 & 11 \\
**April** & 0.0001 & 0.0003 & 0.0023 & 1.9631 & 0.9846 & 0.0017 & 0.9996 & 0.0048 & 0.0058 & 19 & 0.0027 & 0.0021 & 23 & 0.0026 & 0.0029 & 18 \\
**May** & 0.0004 & 0.0048 & 42 & 0.0304 & 0.8491 & 0.0027 & 0.9997 & 0.9995 & 0.0051 & 0.0029 & 15 & 0.0024 & 39 & 0.0029 & 0.0101 & 8 \\
**June** & 0.0058 & 0.0003 & 34 & 0.0375 & 0.6227 & 0.9996 & 0.0886 & 0.9968 & 0.0022 & 0.0025 & 5 & 0.0035 & 0.0031 & 15 & 0.0021 & 0.0025 & 14 \\
**July** & 0.0034 & 0.0048 & 31 & 0.0348 & 0.2486 & 0.0712 & 0.4379 & 0.9999 & - & - & 0.03029 & 0.0230 & 13 & 0.0020 & 18 & 0.0027 & 0.0027 & 18 \\
**August** & 0.0074 & 0.0044 & 31 & 0.0335 & 1.0035 & 0.0347 & 0.0379 & 0.9990 & - & - & 0.03029 & 0.0026 & 19 & 0.0027 & 0.0010 & 12 \\
**September** & 0.0025 & 0.0025 & 27 & 0.0352 & 1.2721 & 0.9756 & 0.0361 & 0.0042 & 0.0015 & 5 & 0.0024 & 0.0018 & 32 & 0.0029 & 0.0113 & 7 \\
**October** & 0.0030 & 0.0044 & 42 & 0.0313 & 1.6021 & 0.9886 & 0.0039 & 0.0046 & 0.0042 & 15 & 0.0027 & 0.0013 & 31 & 0.0024 & 0.0021 & 14 \\
**November** & 0.0035 & 0.0048 & 40 & 0.0297 & 1.7580 & 0.0744 & 0.0353 & 0.0033 & 0.0023 & 20 & 0.0021 & 22 & 0.0044 & 0.0025 & 29 & 0.0032 & 0.0012 & 9 \\
**December** & 0.0005 & 0.0055 & 42 & 0.024 & 1.3206 & 0.9800 & 0.0353 & 0.0365 & 0.0442 & 0.0037 & 27 & 0.0371 & 0.0048 & 27 & 0.0038 & 0.0041 & 8 \\ \hline
**March** & 0.0024 & 0.0055 & 179 & 0.0022 & 1.5644 & 0.9613 & 0.0531 & 0.0531 & 0.0590 & 0.0408 & 0.0044 & 39 & 0.0046 & 0.0115 & 58 & 0.0026 & 0.0012 & 32 \\
**Spring** & 0.0002 & 0.0002 & 168 & 0.0056 & 0.0456 & 0.0560 & 0.0575 & 0.9994 & 0.0048 & 0.0044 & 41 & 0.0578 & 0.0058 & 0.0056 & 0.0016 & 41 \\
**Senmore** & 0.0062 & 0.0021 & 0.0024 & 1.0024 & 0.0561 & 0.0811 & 0.0279 & 0.0994 & 0.0020 & 0.0014 & 0.0014 & 5 & 0.0027 & 0.0153 & 53 & 0.00275 & 0.0028 & 39 \\
**Autumn** & 0.0035 & 0.0048 & 182 & 0.0025 & 1.0097 & 0.0721 & 0.0360 & 0.9913 & 0.0046 & 0.0055 & 56 & 0.0371 & 0.0023 & 94 & 0.0388 & 0.00231 & 32 \\ \hline
**All** & 0.0036 & 0.0045 & 629 & 0.0378 & 0.5146 & 0.0573 & 0.0372 & 0.9947 & 0.0417 & 0.0407 & 0.0407 & 164 & 0.0374 & 0.0410 & 321 & 0.0033 & 0.0028 & 144 \\ \hline \hline \end{tabular}
\end{table} 
Table 9: Monthly, seasonal, and total _GHUV/GHI_ average values, number of daily values (N) and standard deviations (SD) under different sky conditions, together with the slope (a), offset (b), and \(R^{2}\) values of the linear regressions \(GHUV=a\)-\(GHI+b\) and \(GHIV=a\)-\(GHI\). review of some _GHUV/GHI_ ratios around the world has shown that _GHUV_, regardless of the temporal basis of the recorded data, accounts for up to 4% of the total incidence of _GHI_ measured at the same location; the location's height above sea level and the sky conditions were the most influential parameters for the absolute value of the ratio.