| Authors | Location (Lat, Long, Alt) | FUV | R² |
| [15] | Granada, Spain 37.188N, 3.588W, 660 m | HUV = 0.040HG | 0.97 |
| [15] | Almeria, Spain 36.838N, 2.418W, 00 m | HUV = 0.037HG | 0.97 |
| [18] | Valencia, Spain 39.5˚N, SD, 15 m | IUV = 0.033IG HUV = 0.030HG | 0.96 0.96 |
| [19] | Dead Sea, Israel 31˚09N; 35˚15E | HUV = 0.049HG | 0.98 |
| [19] | Beer Sheva, Israel 31˚16'N; 34˚48'E | HUV = 0.053HG | 0.98 |
| [16] | Cairo, Egypt | HUV = 0.034HG | - |
| [9] | Botucatu, SP, Brazil 22.85˚S, 48.45˚W, 786 m | IUV = 0.042IG IUV = 0.042IG | 0.98 0.92 |
| [17] | Recife, PE, Brazil 8˚03'S, 34˚55'W, 7 m | IUV = 0.052IG HUV = 0.0472HG + 0.116 | 0.98 0.98 |
| [17] | Pesqueira, PE, Brazil 8˚24'S, 36˚46'W, 639 m | IUV = 0.054IG HUV = 0.0441HG + 0.2125 | 0.96 0.98 |
| [17] | Araripina, PE, Brazil 7˚34'S, 40˚29'W, 622 m | IUV = 0.048IG HUV = 0.0417HG + 0.1215 | 0.97 0.96 |
| [20] | Maceió, AL, Brazil 9.280S, 35.490W, 127 m | HUV = 0.0274HG | 0.94 |