## 3 Results
### Single Band Regression
#### 3.2.1 Analysis of Errors
The results confirm that reflectances lower than 0.1 contain most of the errors. \begin{table}
\begin{tabular}{c c c c c} \hline
**Band** & **0.01** & **0.015** & **0.02** & **0.025** \\ \hline B05 & 6.86 & 2.37 & 1.21 & 0.78 \\ B06 & 8.09 & 3.07 & 1.42 & 0.79 \\ B07 & 8.95 & 3.15 & 1.19 & 0.51 \\ B8A & 13.49 & 4.83 & 1.87 & 0.82 \\ B11 & 43.70 & 30.51 & 20.97 & 14.35 \\ B12 & 30.20 & 20.38 & 14.14 & 9.75 \\ \hline \end{tabular}
\end{table} 
Table 6: Percentage of pixels beyond a given absolute error threshold (L1C). \begin{table}
\begin{tabular}{c c c c} \hline
**Band** & **0.03** & **0.05** & **0.1** \\ \hline B05 & 49.66 & 29.34 & 7.85 \\ B06 & 39.48 & 16.89 & 2.25 \\ B07 & 45.16 & 23.58 & 4.94 \\ B8A & 48.46 & 27.90 & 7.02 \\ B11 & 75.16 & 60.25 & 32.95 \\ B12 & 74.92 & 60.26 & 33.89 \\ \hline \end{tabular}
\end{table} 
Table 8: Percentage of pixels beyond a given relative error threshold for reflectances in [0, 0.1] (L1C). \begin{table}
\begin{tabular}{c c c c} \hline
**Band** & **0.01** & **0.015** & **0.02** & **0.025** \\ \hline B05 & 6.86 & 2.37 & 1.21 & 0.78 \\ B06 & 8.09 & 3.07 & 1.42 & 0.79 \\ B07 & 8.95 & 3.15 & 1.19 & 0.51 \\ B8A & 13.49 & 4.83 & 1.87 & 0.82 \\ B11 & 43.70 & 30.51 & 20.97 & 14.35 \\ B12 & 30.20 & 20.38 & 14.14 & 9.75 \\ \hline \end{tabular}
\end{table} 
Table 7: Percentage of pixels beyond a given relative error threshold (L1C). \begin{table}
\begin{tabular}{c c c c} \hline
**Band** & **0.01** & **0.015** & **0.02** & **0.025** \\ \hline
9 & 4.76 & 1.94 & 0.91 & \\ B6 & 12.60 & 5.35 & 2.67 & 1.51 \\ B7 & 12.47 & 5.31 & 2.60 & 1.39 \\ B8A & 19.19 & 8.73 & 4.40 & 2.47 \\ B11 & 46.75 & 34.45 & 25.03 & 18.11 \\ B12 & 33.81 & 22.00 & 14.96 & 10.41 \\ \hline \end{tabular}
\end{table} 
Table 5: Percentage of pixels beyond a given absolute error threshold (L2A). \begin{table}
\begin{tabular}{c c c c} \hline
**Band** & **0.03** & **0.05** & **0.1** \\ \hline B05 & 7.98 & 2.69 & 0.37 \\ B06 & 16.71 & 5.98 & 0.42 \\ B07 & 14.57 & 4.03 & 0.26 \\ B8A & 19.82 & 4.63 & 0.24 \\ B11 & 65.31 & 45.43 & 15.98 \\ B12 & 70.94 & 52.66 & 19.58 \\ \hline \end{tabular}
\end{table} 
Table 10: Percentage of pixels beyond a given relative error threshold for reflectances in [0.25, 0.5] (L1C). \begin{table}
\begin{tabular}{c c c c} \hline
**Band** & **0.03** & **0.05** & **0.1** \\ \hline B05 & 13.94 & 8.35 & 1.36 \\ B06 & 5.30 & 1.17 & 0.07 \\ B07 & 3.87 & 1.30 & 0.73 \\ B8A & 6.61 & 0.86 & 0.02 \\ B11 & 85.90 & 75.64 & 51.28 \\ B12 & 92.86 & 90.00 & 81.43 \\ \hline \end{tabular}
\end{table} 
Table 12: Percentage of pixels beyond a given relative error threshold for reflectances in [0.75, 1] (L1C). \begin{table}
\begin{tabular}{c c c} \hline
**Band** & **0.03** & **0.05** & **0.1** \\ \hline B05 & 10.06 & 3.15 & 0.29 \\ B06 & 10.20 & 2.93 & 0.22 \\ B07 & 17.32 & 4.88 & 1.13 \\ B8A & 20.40 & 5.26 & 0.25 \\ B11 & 53.24 & 27.82 & 3.57 \\ B12 & 52.10 & 31.80 & 5.49 \\ \hline \end{tabular}
\end{table} 
Table 11: Percentage of pixels beyond a given relative error threshold for reflectances in [0.5, 0.75] (L1C). \begin{table}
\begin{tabular}{c c c c} \hline
**Band** & **0.03** & **0.05** & **0.1** \\ \hline B05 & 13.94 & 8.35 & 1.36 \\ B06 & 5.30 & 1.17 & 0.07 \\ B07 & 3.87 & 1.30 & 0.73 \\ B8A & 6.61 & 0.86 & 0.02 \\ B11 & 85.90 & 75.64 & 51.28 \\ B12 & 92.86 & 90.00 & 81.43 \\ \hline \end{tabular}
\end{table} 
Table 9: Percentage of pixels beyond a given relative error threshold for reflectances in [0.1, 0.25] (L1C). Figure 8: Scatterplots for the single-band regression (L2A). The colors indicate the increasing density of points. Figure 7: Scatterplots for the single-band regression (L1C). The colors indicate the density of points. To complete the analysis of the errors, we present the histograms of the errors (true minus predicted reflectance) using the complete validation dataset (about 5 million pixels). Figure 9 shows the histograms for the L1C bands and Figure 10 for the L2A bands.