Spectral Factor of Colored Solar Cells: A Case Study on the Main Urban Areas in Romania

Figure 3

Distribution of the Ångström exponent , Ångström turbidity coefficient , and water vapor column content (g/cm²) measured at the AERONET stations: Bucharest, Cluj, Iasi, and Timisoara during January 2012 to December 2020. For each physical quantity, the total number of recordings is 162722 broken down on stations as follows: 64248 at Bucharest, 34689 at Cluj, 39340 at Iasi, and 24445 at Timisoara.